date:20130124

On 24 January 2013 04:49, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
[SNIP]

 Contrariwise, I don't believe that there is currently *any* way to
 distinguish between running a script with or without -m. That should be
 fixed.

As I said earlier in the thread, the __package__ module global
distinguishes the two cases:

~$ mkdir pkg
~$ touch pkg/__init__.py
~$ vim pkg/__main__.py
~$ cat pkg/__main__.py
import sys
if __package__ is None:
cmdline = [sys.executable] + sys.argv
else:
cmdline = [sys.executable, '-m', __package__] + sys.argv[1:]
print(cmdline)
~$ python pkg/__main__.py arg1 arg2
['q:\\tools\\Python27\\python.exe', 'pkg/__main__.py', 'arg1', 'arg2']
~$ python -m pkg arg1 arg2
['q:\\tools\\Python27\\python.exe', '-m', 'pkg', 'arg1', 'arg2']


Oscar
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Re: Any algorithm to preserve whitespaces?

2013-01-24 Thread Santosh Kumar

But I can; see: http://pastebin.com/ZGGeZ71r

On 1/24/13, Peter Otten __pete...@web.de wrote:
 Santosh Kumar wrote:

 On 1/24/13, Peter Otten __pete...@web.de wrote:
 Santosh Kumar wrote:

 Yes, Peter got it right.

 Now, how can I replace:

 script, givenfile = argv

 with something better that takes argv[1] as input file as well as
 reads input from stdin.

 By input from stdin, I mean that currently when I do `cat foo.txt |
 capitalizr` it throws a ValueError error:

 Traceback (most recent call last):
   File /home/santosh/bin/capitalizr, line 16, in module
 script, givenfile = argv
 ValueError: need more than 1 value to unpack

 I want both input methods.

 You can use argparse and its FileType:

 import argparse
 import sys

 parser = argparse.ArgumentParser()
 parser.add_argument(infile, type=argparse.FileType(r), nargs=?,
 default=sys.stdin)
 args = parser.parse_args()

 for line in args.infile:
 print line.strip().title() # replace with your code


 This works file when I do `script.py inputfile.txt`; capitalizes as
 expected. But it work unexpected if I do `cat inputfile.txt |
 script.py`; leaves the first word of each line and then capitalizes
 remaining.

 I cannot reproduce that:

 $ cat title.py
 #!/usr/bin/env python
 import argparse
 import sys

 parser = argparse.ArgumentParser()
 parser.add_argument(infile, type=argparse.FileType(r), nargs=?,
 default=sys.stdin)
 args = parser.parse_args()

 for line in args.infile:
 print line.strip().title() # replace with your code
 $ cat inputfile.txt
 alpha beta
 gamma delta epsilon
 zeta
 $ cat inputfile.txt | ./title.py
 Alpha Beta
 Gamma Delta Epsilon
 Zeta
 $ ./title.py inputfile.txt
 Alpha Beta
 Gamma Delta Epsilon
 Zeta


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Re: Memory error with quadratic interpolation

On 23 January 2013 17:33, Isaac Won winef...@gmail.com wrote:
 On Wednesday, January 23, 2013 10:51:43 AM UTC-6, Oscar Benjamin wrote:
 On 23 January 2013 14:57, Isaac Won winef...@gmail.com wrote:

  On Wednesday, January 23, 2013 8:40:54 AM UTC-6, Oscar Benjamin wrote:

 Unless I've misunderstood how this function is supposed to be used, it
 just doesn't really seem to work for arrays of much more than a few
 hundred elements.


The solution is to use UnivariateSpline. I don't know what the
difference is but it works where the other fails:

import numpy as np
from scipy.interpolate import UnivariateSpline
x = np.array(1 * [0.0], float)
indices = np.arange(len(x))
interp = UnivariateSpline(indices, x, k=2)
print(interp(1.5))


Oscar
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Python to send Midi commands to iPad via USB

Dear all,

I am asking for a design/strategy suggestion.

What I have to do is to write a Python application that will send MIDI commands 
to an iPad application.
All I know is that the iPad application can be connected to an external Midi 
deck through a usb cable and be controlled.
So I think I would connect the iPad via USB to my computer and... try to send 
midi commands.
I think the limitation is that the iPad will allow signaling/connection only to 
Midi devices, so I have to make so that my Python script pretends that my 
computer is a Midi device.
So far I have tried PyUSB library and I can see the iPad, but I can't send 
anything to it (probably because I am not pretending to be a Midi device well 
enough).

I am keen to try PyUSB + pygame for the Midi stuff.

Any suggestion / recommendation / hint / whatever to tell me?
I appreciate every idea at this stage!

Thanks for reading,
Mik
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using split for a string : error

2013-01-24 Thread inshu chauhan

Here I have a code which basically reads a csv file, tries to compare the
last 2 items in each line of the file.

f = open(rZ:\modules\Feature_Vectors_300_Pclass.arff)
for l in f:
sp = l.split(,)
if len(sp) != 11:
print  of, l,

else:
#print sp[9], sp[10]
if sp[9] == sp[10]:
print  Same class
else :
print Different class

f.close()

For me I think the programme is logically correct, but its giving me
results which are strange.
It is  Printing  Different Class  even when sp[9] is equal to sp[10] and
Same class when sp[9] is not equal to sp[10].  and sp[9] and sp[10] are
simple integers like 3, 3, 4 ,4.

I have a little understanding why the programme is behaving like this ?
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Re: The best, friendly and easy use Python Editor.

On Thursday, January 24, 2013 9:43:31 AM UTC, Hazard Seventyfour wrote:
 Hello,
 
 
 
 I new in this python and decided to learn more about it, so i can make an own 
 script :),
 
 
 
 for all senior can you suggest me the best, friendly and easy use with nice 
 GUI editor for me, and have many a good features such as auto complete/auto 
 correct.
 
 
 
 any recommend? Thanks ^_^

Hi,
an editor is pretty much a matter of personal preferences.
I personally like Eclipse as I use it for most of my projects (not only Python) 
so I use Eclipse + PyDev plug-in for Python.

mik
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Re: Python to send Midi commands to iPad via USB

On Thu, Jan 24, 2013 at 9:31 PM,  mikp...@gmail.com wrote:
 What I have to do is to write a Python application that will send MIDI 
 commands to an iPad application.
 All I know is that the iPad application can be connected to an external Midi 
 deck through a usb cable and be controlled.
 So I think I would connect the iPad via USB to my computer and... try to send 
 midi commands.

Are you able to hook into ALSA? I've had reasonable success driving a
USB-MIDI cable using ALSA. See if you can do it with the inbuilt
'pmidi' app first:

$ pmidi -p 128:0 No.19.mid

(that uses port 128:0 which is a TiMidity-provided one)

If that works, you can then look for Python ALSA bindings, which I
believe are available on PyPI.

My example is from Linux, so you may need to tweak things on other OSes.

ChrisA
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Re: Any algorithm to preserve whitespaces?

2013-01-24 Thread Peter Otten

Santosh Kumar wrote:

 But I can; see: http://pastebin.com/ZGGeZ71r

You have messed with your cat command -- it adds line numbers.
Therefore the output of

cat somefile | ./argpa.py

differs from

./argpa.py somefile

Try

./argpa.py  somefile

to confirm my analysis. As to why your capitalisation algorithm fails on 
those augmented lines: the number is separated from the rest of the line by 
a TAB -- therefore the first word is 1\tthis and the only candidate to be 
capitalised is the 1. To fix this you could use regular expressions (which 
I wanted to avoid initially):

 parts = re.compile((\s+)).split( 1\tthis is it)
 parts
['', ' ', '1', '\t', 'this', ' ', 'is', ' ', 'it']

Process every other part as you wish and then join all parts:

 parts[::2] = [s.upper() for s in parts[::2]]
 parts
['', ' ', '1', '\t', 'THIS', ' ', 'IS', ' ', 'IT']
 print .join(parts)
 1  THIS IS IT


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Re: using split for a string : error


Hi,

do a print sp after the split and you might see that the strings don't 
look as you expected. There might be leading or trailing whitespaces in 
the splitted strings and in sp[10] there probably is a line break \n 
at the end.

To remove those unwanted characters you could use the strip() function.

So your code could be:

if sp[9].strip() == sp[10].strip():
print Same class
else:
print Different class

At least this works for me when I tried it...

Am 24.01.2013 11:37, schrieb inshu chauhan:
Here I have a code which basically reads a csv file, tries to compare 
the last 2 items in each line of the file.


f = open(rZ:\modules\Feature_Vectors_300_Pclass.arff)
for l in f:
sp = l.split(,)
if len(sp) != 11:
print  of, l,

else:
#print sp[9], sp[10]
if sp[9] == sp[10]:
print  Same class
else :
print Different class

f.close()

For me I think the programme is logically correct, but its giving me 
results which are strange.
It is  Printing  Different Class  even when sp[9] is equal to sp[10] 
and Same class when sp[9] is not equal to sp[10]. and sp[9] and 
sp[10] are simple integers like 3, 3, 4 ,4.


I have a little understanding why the programme is behaving like this ?




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Re: Retrieving the full command line

On 24/01/2013 10:06, Oscar Benjamin wrote:
 On 24 January 2013 04:49, Steven D'Aprano
 steve+comp.lang.pyt...@pearwood.info wrote:
 [SNIP]

 Contrariwise, I don't believe that there is currently *any* way to
 distinguish between running a script with or without -m. That should be
 fixed.
 
 As I said earlier in the thread, the __package__ module global
 distinguishes the two cases:
 
 ~$ mkdir pkg
 ~$ touch pkg/__init__.py
 ~$ vim pkg/__main__.py
 ~$ cat pkg/__main__.py
 import sys
 if __package__ is None:
 cmdline = [sys.executable] + sys.argv
 else:
 cmdline = [sys.executable, '-m', __package__] + sys.argv[1:]
 print(cmdline)
 ~$ python pkg/__main__.py arg1 arg2
 ['q:\\tools\\Python27\\python.exe', 'pkg/__main__.py', 'arg1', 'arg2']
 ~$ python -m pkg arg1 arg2
 ['q:\\tools\\Python27\\python.exe', '-m', 'pkg', 'arg1', 'arg2']

Reasonable (and thanks for the clear example), but it doesn't work
if the package which is reconstructing the command line the package
which was the target of the original command line. In my case,
I'm making use of the cherrypy reloader, whose __package__ is
cherrypy.process. But the command which invoked the program was
python -m myapp.

ie I'm issuing python -m myapp. In myapp.__main__ I'm importing
cherrypy, itself a package, and somewhere in cherrypy.whatever there is
code which attempts to reconstruct the command line.

TJG
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Re: using split for a string : error

On Thu, Jan 24, 2013 at 9:37 PM, inshu chauhan insidesh...@gmail.com wrote:
 For me I think the programme is logically correct, but its giving me results
 which are strange.
 It is  Printing  Different Class  even when sp[9] is equal to sp[10] and
 Same class when sp[9] is not equal to sp[10].  and sp[9] and sp[10] are
 simple integers like 3, 3, 4 ,4.

 I have a little understanding why the programme is behaving like this ?

Without your data file I can't advise, but here's a couple of things
to try. I see you've tried displaying the values:

#print sp[9], sp[10]

Try this version:

print repr(sp[9]), repr(sp[10])

That'll make it obvious if, for instance, there are leading/trailing spaces.

The other thing you may want to consider, if the values are supposed
to be integers, is to convert them to Python integers before
comparing. Currently, you're working with strings. Replace this:

if sp[9] == sp[10]:

with this:

if int(sp[9]) == int(sp[10]):

That will consider 1 and 1  to be the same, since they'll both be
parsed as the integer 1. Alternatively, consider what Tobias said and
explicitly strip spaces. Either way, displaying repr() of the strings
(or printing the whole of sp, as Tobias suggests) will show you what's
needed.

ChrisA
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mysql solution

# insert new page record in table counters or update it if already exists
try:
cursor.execute( '''INSERT INTO counters(page, hits) VALUES(%s, 
%s) 
ON DUPLICATE 
KEY UPDATE hits = hits + 1''', (htmlpage, 1) )
except MySQLdb.Error, e:
print ( Query Error: , sys.exc_info()[1].excepinfo()[2] )

# update existing visitor record if same pin and same host found
try:
cursor.execute( '''UPDATE visitors SET hits = hits + 1, useros 
= %s, browser = %s, date = %s WHERE pin = %s AND host = %s''', (useros, 
browser, date, pin, host))
except MySQLdb.Error, e:
print ( Error %d: %s % (e.args[0], e.args[1]) )

# insert new visitor record if above update did not affect a row
if cursor.rowcount == 0:
cursor.execute( '''INSERT INTO visitors(hits, host, useros, 
browser, date) VALUES(%s, %s, %s, %s, %s)''', (1, host, useros, browser, date) )

==

I;am now convinced the hash solution isn't reversible and also isn't unique.
I'am trying the database oriented solution.

pin column = 5-digit integer Primary Key.

When i'am inserting a new record to table counters, a sequenced number is 
crated as pin. Thats works ok.


But when i try to Update or Insert into the visitors table the 'pin' comunn is 
needed to to identify the rrecord for which iam trying to update like here:


cursor.execute( '''UPDATE visitors SET hits = hits + 1, useros = %s, browser = 
%s, date = %s WHERE pin = %s AND host = %s''', (useros, browser, date, pin, 
host))


how is the mysql statement is going to find the 'pin' to update the specific 
record.
And also in here:


if cursor.rowcount == 0:
cursor.execute( '''INSERT INTO visitors(pin, hits, host, 
useros, browser, date) VALUES(%s, %s, %s, %s, %s, %s)''', (pin, 1, host, 
useros, browser, date) )


'pin' column's value is also need to make insert


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Re: using split for a string : error

2013-01-24 Thread inshu chauhan

On Thu, Jan 24, 2013 at 11:55 AM, Tobias M. t...@tobix.eu wrote:

  Hi,

 do a print sp after the split and you might see that the strings don't
 look as you expected. There might be leading or trailing whitespaces in the
 splitted strings and in sp[10] there probably is a line break \n at the
 end.
 To remove those unwanted characters you could use the strip() function.

 So your code could be:

 if sp[9].strip() == sp[10].strip():

 print Same class
 else:
 print Different class

 At least this works for me when I tried it...

 Am 24.01.2013 11:37, schrieb inshu chauhan:

   Here I have a code which basically reads a csv file, tries to compare
 the last 2 items in each line of the file.

 f = open(rZ:\modules\Feature_Vectors_300_Pclass.arff)
 for l in f:
 sp = l.split(,)
 if len(sp) != 11:
 print  of, l,

 else:
 #print sp[9], sp[10]
 if sp[9] == sp[10]:
 print  Same class
 else :
 print Different class

 f.close()

  For me I think the programme is logically correct, but its giving me
 results which are strange.
  It is  Printing  Different Class  even when sp[9] is equal to sp[10]
 and Same class when sp[9] is not equal to sp[10].  and sp[9] and sp[10]
 are simple integers like 3, 3, 4 ,4.

  I have a little understanding why the programme is behaving like this ?


  Yeah I tried printing, there were trailing white spaces, so i used
 strip() and IT Worked !!! :)


Thank you


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Re: mysql solution

On Thu, Jan 24, 2013 at 10:04 PM, Ferrous Cranus nikos.gr...@gmail.com wrote:
 I;am now convinced the hash solution isn't reversible and also isn't unique.
 I'am trying the database oriented solution.

Glad you've listened to at least some of what you've been told. But if
you want to be taken seriously on this list, I recommend going back to
your previous name of Νικόλαος Κούρας (which Google Translate tells me
transliterates as Nicholas Kouri), apologizing for trolling, and being
VERY careful to be respectful. I suspect a number of the list's best
posters have already killfiled you.

ChrisA
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Re: Retrieving the full command line

On 24/01/2013 10:56, Tim Golden wrote:
 if the package which is reconstructing the command line the package
 which was the target of the original command line.


Sorry:

  if the package which is reconstructing the command line *is not*
  the package which was the target of the original command line.

TJG
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Re: The best, friendly and easy use Python Editor.

On Thu, Jan 24, 2013 at 8:43 PM, Hazard Seventyfour
hseventyf...@gmail.com wrote:
 Hello,

 I new in this python and decided to learn more about it, so i can make an own 
 script :),

 for all senior can you suggest me the best, friendly and easy use with nice 
 GUI editor for me, and have many a good features such as auto complete/auto 
 correct.

 any recommend? Thanks ^_^

Here we go, it's holy war time again! :)

You'll get a HUGE lot of responses. Many use emacs or vim, and you'll
get a few recommendations for IDLE. After that, it's a huge field of
options. I personally use SciTE; it's a good editor, but I don't
particularly like the way the project is run (nothing strong, but I
didn't like the tone on its mailing list). Eclipse has its fans, too.

A Python IDE is not nearly as beneficial as, say, a Java IDE. A good
Python editor just needs to do the basics like indentation, syntax
highlighting, and such; I like IDLE's method info when I'm working
interactively, but it's not a big deal when I'm writing a program. In
fact, all you really need out of an IDE can probably be supplied by
just a good editor, maybe a makefile, and alt-tabbing to IDLE.
However, if you want an IDE, they do exist.

ChrisA
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Re: mysql solution

Ferrous Cranus nikos.gr...@gmail.com writes:

 I;am now convinced the hash solution isn't reversible and also isn't
 unique.

Great!

 how is the mysql statement is going to find the 'pin' to update the
 specific record.

The simplest way is to execute a SELECT just after the insertion, doing
a

  SELECT pin FROM counters WHERE page = %s

I don't use MySQL, so I can't say if it supports INSERT ... RETURNING ...
SQL syntax: should it, then you could insert the data and fetch
the pin in one shot, with something like

  INSERT INTO counters (page, hits) VALUES (%s, %s) RETURNING (pin)

ciao, lele.
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real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia.
l...@metapensiero.it  | -- Fortunato Depero, 1929.

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Re: using split for a string : error


Chris Angelico wrote:



The other thing you may want to consider, if the values are supposed
to be integers, is to convert them to Python integers before
comparing. Currently, you're working with strings. Replace this:

if sp[9] == sp[10]:

with this:

if int(sp[9]) == int(sp[10]):
I thought of this too and I wonder if there are any major differences 
regarding performance compared to using the strip() method when parsing 
large files.


In addition I guess one should catch the ValueError that might be raised 
by the cast if there is something else than a number in the file.

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Re: mysql solution

On Thu, Jan 24, 2013 at 10:25 PM, Lele Gaifax l...@metapensiero.it wrote:
 The simplest way is to execute a SELECT just after the insertion, doing
 a

   SELECT pin FROM counters WHERE page = %s

 I don't use MySQL, so I can't say if it supports INSERT ... RETURNING ...
 SQL syntax: should it, then you could insert the data and fetch
 the pin in one shot, with something like

   INSERT INTO counters (page, hits) VALUES (%s, %s) RETURNING (pin)

AFAIK it doesn't, but if pin is an AUTO_INCREMENT primary key, you can
retrieve the ID of the newly inserted record. It's not nearly as
flexible as INSERT... RETURNING, but it covers the most common use
case.

ChrisA
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Re: using split for a string : error

On Thu, Jan 24, 2013 at 10:01 PM, inshu chauhan insidesh...@gmail.com wrote:
 Yeah I tried printing, there were trailing white spaces, so i used strip()
 and IT Worked !!! :)

Awesome! Keep repr() in mind, it's a great way to check what's really there.

ChrisA
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Re: Retrieving the full command line

On 24 January 2013 10:56, Tim Golden m...@timgolden.me.uk wrote:
 On 24/01/2013 10:06, Oscar Benjamin wrote:
 On 24 January 2013 04:49, Steven D'Aprano
 steve+comp.lang.pyt...@pearwood.info wrote:
 [SNIP]

 Contrariwise, I don't believe that there is currently *any* way to
 distinguish between running a script with or without -m. That should be
 fixed.

 As I said earlier in the thread, the __package__ module global
 distinguishes the two cases:

 ~$ mkdir pkg
 ~$ touch pkg/__init__.py
 ~$ vim pkg/__main__.py
 ~$ cat pkg/__main__.py
 import sys
 if __package__ is None:
 cmdline = [sys.executable] + sys.argv
 else:
 cmdline = [sys.executable, '-m', __package__] + sys.argv[1:]
 print(cmdline)
 ~$ python pkg/__main__.py arg1 arg2
 ['q:\\tools\\Python27\\python.exe', 'pkg/__main__.py', 'arg1', 'arg2']
 ~$ python -m pkg arg1 arg2
 ['q:\\tools\\Python27\\python.exe', '-m', 'pkg', 'arg1', 'arg2']

 Reasonable (and thanks for the clear example), but it doesn't work
 if the package which is reconstructing the command line the package
 which was the target of the original command line. In my case,
 I'm making use of the cherrypy reloader, whose __package__ is
 cherrypy.process. But the command which invoked the program was
 python -m myapp.

 ie I'm issuing python -m myapp. In myapp.__main__ I'm importing
 cherrypy, itself a package, and somewhere in cherrypy.whatever there is
 code which attempts to reconstruct the command line.

Easy enough:

~$ mkdir pkg
~$ touch pkg/__init__.py
~$ vim pkg/__main__.py
~$ cat pkg/__main__.py
import pkg.whatever
~$ vim pkg/whatever.py
~$ cat pkg/whatever.py
import sys
import pkg.__main__ as main
cmdline = [sys.executable, '-m', main.__package__] + sys.argv[1:]
print(cmdline)
~$ python -m pkg
['q:\\tools\\Python27\\python.exe', '-m', 'pkg']
~$ python -m pkg arg1 arg32
['q:\\tools\\Python27\\python.exe', '-m', 'pkg', 'arg1', 'arg32']

I don't really understand what your spec is. Why do you need to
inspect this information from sys.argv? Can you not just always use
'python -m pkg' as your entry point?


Oscar
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XML validation / exception.

2013-01-24 Thread Andrew Robinson


A quick question:

On xml.etree,
When I scan in a handwritten XML file, and there are mismatched tags -- 
it will throw an exception.
and the exception will contain a line number of the closing tag which 
does not have a mate of the same kind.


Is there a way to get the line number of the earlier tag which caused 
the XML parser to know the closing tag was mismatched, so I can narrow 
down the location of the mismatches for a manual repair? (I don't want 
auto-repair like beautiful soup. but google is worthless for finding a 
solution...)


And secondly, for times where I want to throw a software/content 
specific error on valid XML files;
I don't see which attribute of an element, or method, allows me to find 
out the line number and column number that an element I am examining is 
found at.


? How do I get it ?

Cheers, --Andrew.
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Re: How do functions get access to builtins?

2013-01-24 Thread Steven D'Aprano

Rouslan Korneychuk wrote:

 I found the answer in Python's source code. When you execute a code
 object, PyFrame_New is called which gets 'bultins' from 'globals', but
 inside PyFrame_New (defined on line 596 of Objects/frameobject.c) is the
 following (line 613):
 
builtins = PyDict_GetItem(globals, builtin_object);
 
 Unlike PyObject_GetItem, PyDict_GetItem is specialized for dict objects.
 Your ChainedDict class uses ChainMaps's storage and leaves dict's
 storage empty, so PyDict_GetItem doesn't find anything.
[...]
 Interestingly: it looks like it could be fixed easily enough. Unless
 there are other places where globals is assumed to be a dict object, it
 would just be a matter of doing the same check and fallback in
 PyFrame_New that is done in LOAD_GLOBAL (technically, you could just use
 PyObject_GetItem; obviously, this is an optimization).


Thanks for the reply Rouslan.

Perhaps I should report this as a bug.




-- 
Steven

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Re: using split for a string : error

On Thu, Jan 24, 2013 at 10:16 PM, Tobias M. t...@tobix.eu wrote:
 Chris Angelico wrote:
 The other thing you may want to consider, if the values are supposed
 to be integers, is to convert them to Python integers before
 comparing.

 I thought of this too and I wonder if there are any major differences
 regarding performance compared to using the strip() method when parsing
 large files.

 In addition I guess one should catch the ValueError that might be raised by
 the cast if there is something else than a number in the file.

I'd not consider the performance, but the correctness. If you're
expecting them to be integers, just cast them, and specifically
_don't_ catch ValueError. Any non-integer value will then noisily
abort the script. (It may be worth checking for blank first, though,
depending on the data origin.)

It's usually fine to have int() complain about any non-numerics in the
string, but I must confess, I do sometimes yearn for atoi() semantics:
atoi(123asd) == 123, and atoi(qqq) == 0. I've not seen a
convenient Python function for doing that. Usually it involves
manually getting the digits off the front. All I want is to suppress
the error on finding a non-digit. Oh well.

ChrisA
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Re: Python to send Midi commands to iPad via USB

On Thursday, January 24, 2013 10:44:47 AM UTC, Chris Angelico wrote:
[..]
 
 Are you able to hook into ALSA? I've had reasonable success driving a
 
 USB-MIDI cable using ALSA. See if you can do it with the inbuilt
 
 'pmidi' app first:
 
 
 
 $ pmidi -p 128:0 No.19.mid
 
 
 
 (that uses port 128:0 which is a TiMidity-provided one)
 
 
 
 If that works, you can then look for Python ALSA bindings, which I
 
 believe are available on PyPI.
 

Thanks for your help Chris!
forgive my ignorance, but I am not sure what you mean.
I've installed pmidi and what I get is:

~$ pmidi -p 128:0 No.19.mid
Could not open file No.19.mid

Doesn't that mean that the iPad is not seen?

where:
~$ lsusb 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of 
BCM2046 Bluetooth)
Bus 005 Device 002: ID 0a5c:5800 Broadcom Corp. BCM5880 Secure Applications 
Processor
Bus 003 Device 003: ID 413c:8157 Dell Computer Corp. Integrated Keyboard
Bus 003 Device 004: ID 413c:8158 Dell Computer Corp. Integrated Touchpad / 
Trackstick
Bus 006 Device 002: ID 192f:0416 Avago Technologies, Pte. 
Bus 002 Device 003: ID 05ac:12a4 Apple, Inc. 


Essentially the reason to use the iPad is because we have to make a demo where 
with our hardware we send midi commands and the iPad has a very good DJ 
application that can be used with a USB midi controller.
So I wish to connect our hardware to a Raspberry Pi (or similar) via BLE and 
then the board (Raspberry Pi) to the iPad through USB cable.

I think the weak point is communication from the Raspberry Pi (or PC) to the 
iPad via USB. I could actually remove that if I find a decent Linux/Python 
application that acts as a DJ deck.

I am having a look at pygame.midi as well, but I am not sure how to link that 
with a USB cable.

mik
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Re: Python to send Midi commands to iPad via USB

On Thu, Jan 24, 2013 at 10:48 PM,  mikp...@gmail.com wrote:
 Thanks for your help Chris!
 forgive my ignorance, but I am not sure what you mean.
 I've installed pmidi and what I get is:

 ~$ pmidi -p 128:0 No.19.mid
 Could not open file No.19.mid

 Doesn't that mean that the iPad is not seen?

Heya! That was just an example; I used track number 19 from the opera
Iolanthe as my test file. Pick any other MIDI file you have handy.
Though, I may have my commands mixed up; aplaymidi may be more what
you want.

In any case, the key is the port number. Try this to enumerate ports:

$ aplaymidi -l

That's lower-case l for list. If that tells you about something that
looks like your iPad, you're in luck, ALSA has already done most of
the work! And you should be able to play any file with:

$ aplaymidi -p X:Y some-file.mid

where X:Y is from the first column of aplaymidi -l output.

On my system currently, I have 128:0 through 128:3 from TiMidity, and
14:0 Midi Through. When my USB device is connected, I get a couple
more ports from it.

ChrisA
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Re: using split for a string : error


Chris Angelico wrote:

I'd not consider the performance, but the correctness. If you're
expecting them to be integers, just cast them, and specifically
_don't_ catch ValueError. Any non-integer value will then noisily
abort the script. (It may be worth checking for blank first, though,
depending on the data origin.)
Well, when I said you should catch the ValueError I didn't imply you 
should ignore the error and supress any error messages. Of course this 
depents on the use case. Maybe you want to raise another exception with 
a more user friendly error message or you might want to skip the line 
and just print a warning. :)


What I'm trying to say: When I give a script/program to a user who is 
not a python programmer I don't want him to see an error message like 
ValueError: invalid literal for int() with base 10: 'abc' as this 
would help him in no way.

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Re: mysql solution

Τη Πέμπτη, 24 Ιανουαρίου 2013 1:25:20 μ.μ. UTC+2, ο χρήστης Lele Gaifax έγραψε:
 Ferrous Cranus nikos.gr...@gmail.com writes:
 
 
 
  I;am now convinced the hash solution isn't reversible and also isn't
 
  unique.
 
 
 
 Great!
 
 
 
  how is the mysql statement is going to find the 'pin' to update the
 
  specific record.
 
 
 
 The simplest way is to execute a SELECT just after the insertion, doing
 
 a
 
 
 
   SELECT pin FROM counters WHERE page = %s
 
 
 
 I don't use MySQL, so I can't say if it supports INSERT ... RETURNING ...
 
 SQL syntax: should it, then you could insert the data and fetch
 
 the pin in one shot, with something like
 
 
 
   INSERT INTO counters (page, hits) VALUES (%s, %s) RETURNING (pin)
 
 
 
 ciao, lele.
 
 --
 
 nickname: Lele Gaifax | Quando vivrò di quello che ho pensato ieri
 
 real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia.
 
 l...@metapensiero.it  | -- Fortunato Depero, 1929.

I just tried this statement:

==
cursor.execute( '''INSERT INTO counters(page, hits) VALUES(%s, %s) RETURNING 
(pin) 
ON DUPLICATE 
KEY UPDATE hits = hits + 1''', (htmlpage, 1) )
except MySQLdb.Error, e:
print ( Query Error: , sys.exc_info()[1].excepinfo()[2] )
==

and the error python tells me is:

type 'exceptions.AttributeError': 'ProgrammingError' object has no attribute 
'excepinfo' 
  args = ('ProgrammingError' object has no attribute 'excepinfo',) 
  message = 'ProgrammingError' object has no attribute 'excepinfo'
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Re: using split for a string : error

On Thu, Jan 24, 2013 at 10:58 PM, Tobias M. t...@tobix.eu wrote:
 Chris Angelico wrote:

 I'd not consider the performance, but the correctness. If you're
 expecting them to be integers, just cast them, and specifically
 _don't_ catch ValueError. Any non-integer value will then noisily
 abort the script. (It may be worth checking for blank first, though,
 depending on the data origin.)

 Well, when I said you should catch the ValueError I didn't imply you should
 ignore the error and supress any error messages. Of course this depents on
 the use case. Maybe you want to raise another exception with a more user
 friendly error message or you might want to skip the line and just print a
 warning. :)

 What I'm trying to say: When I give a script/program to a user who is not a
 python programmer I don't want him to see an error message like ValueError:
 invalid literal for int() with base 10: 'abc' as this would help him in no
 way.

Sure. Definitely. But for a proglet where the programmer IS the user
(which I think is one of Python's best use-cases), that exception
landing on the console is better than having to think ahead of time
about what might go wrong.

ChrisA
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Re: using split for a string : error


Am 24.01.2013 13:02, schrieb Chris Angelico:

On Thu, Jan 24, 2013 at 10:58 PM, Tobias M. t...@tobix.eu wrote:

Chris Angelico wrote:

I'd not consider the performance, but the correctness. If you're
expecting them to be integers, just cast them, and specifically
_don't_ catch ValueError. Any non-integer value will then noisily
abort the script. (It may be worth checking for blank first, though,
depending on the data origin.)

Well, when I said you should catch the ValueError I didn't imply you should
ignore the error and supress any error messages. Of course this depents on
the use case. Maybe you want to raise another exception with a more user
friendly error message or you might want to skip the line and just print a
warning. :)

What I'm trying to say: When I give a script/program to a user who is not a
python programmer I don't want him to see an error message like ValueError:
invalid literal for int() with base 10: 'abc' as this would help him in no
way.

Sure. Definitely. But for a proglet where the programmer IS the user
(which I think is one of Python's best use-cases), that exception
landing on the console is better than having to think ahead of time
about what might go wrong.

ChrisA

Okay, I absolutely agree with that :)

Tobias
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Re: mysql solution

Ferrous Cranus nikos.gr...@gmail.com writes:

 Τη Πέμπτη, 24 Ιανουαρίου 2013 1:25:20 μ.μ. UTC+2, ο χρήστης Lele Gaifax 
 έγραψε:

Please, trim your response messages, cutting away useless details.


 I just tried this statement:

 ==
 cursor.execute( '''INSERT INTO counters(page, hits) VALUES(%s, %s) RETURNING 
 (pin) 
   ON DUPLICATE 
 KEY UPDATE hits = hits + 1''', (htmlpage, 1) )
   except MySQLdb.Error, e:
   print ( Query Error: , sys.exc_info()[1].excepinfo()[2] )
 ==

 and the error python tells me is:

 type 'exceptions.AttributeError': 'ProgrammingError' object has no 
 attribute 'excepinfo' 
   args = ('ProgrammingError' object has no attribute 'excepinfo',) 
   message = 'ProgrammingError' object has no attribute 'excepinfo'

As the error message says, you have a typo in your exception handler.

I suggest using the logging[1] module to print out such information, as it
expose a bunch of handy methods that make it easier to print the
exception, for example:

  ...
  except MySQLdb.Error:
logging.error('Query Error!', exc_info=True)

or even

  ...
  except MySQLdb.Error:
logging.exception('Query Error!')

ciao, lele.

[1] http://docs.python.org/2.7/library/logging.html#module-logging
-- 
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real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia.
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Re: using split for a string : error

2013-01-24 Thread inshu chauhan

Thanks a lot people.. :).. :)

On Thu, Jan 24, 2013 at 1:10 PM, Tobias M. t...@tobix.eu wrote:

Am 24.01.2013 13:02, schrieb Chris Angelico:

On Thu, Jan 24, 2013 at 10:58 PM, Tobias M. t...@tobix.eu wrote:

Chris Angelico wrote:

I'd not consider the performance, but the correctness. If you're
expecting them to be integers, just cast them, and specifically
_don't_ catch ValueError. Any non-integer value will then noisily
abort the script. (It may be worth checking for blank first, though,
depending on the data origin.)

Well, when I said you should catch the ValueError I didn't imply you
should
ignore the error and supress any error messages. Of course this depents
on
the use case. Maybe you want to raise another exception with a more user
friendly error message or you might want to skip the line and just print
a
warning. :)

What I'm trying to say: When I give a script/program to a user who is
not a
python programmer I don't want him to see an error message like
ValueError:
invalid literal for int() with base 10: 'abc' as this would help him in
no
way.

Sure. Definitely. But for a proglet where the programmer IS the user
(which I think is one of Python's best use-cases), that exception
landing on the console is better than having to think ahead of time
about what might go wrong.

ChrisA

Okay, I absolutely agree with that :)

Tobias
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Re: Python to send Midi commands to iPad via USB

[..]

 
  ~$ pmidi -p 128:0 No.19.mid
 
  Could not open file No.19.mid
 
 
 
  Doesn't that mean that the iPad is not seen?
 
 
 Heya! That was just an example; I used track number 19 from the opera
 
 Iolanthe as my test file. Pick any other MIDI file you have handy.


This is exactly the point where I feel dumb :-)

 
[..] 
 $ aplaymidi -l
 

I think I am not lucky :-(

$ aplaymidi -l
 PortClient name  Port name
 14:0Midi Through Midi Through Port-0

I get the same either the iPad is connected or not.
So I guess is not recognized.
Shame.

I'll keep on investigating, hopefully without loosing any of my neurons.

Thanks,
mik
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Re: Python to send Midi commands to iPad via USB

On Thu, Jan 24, 2013 at 11:25 PM,  mikp...@gmail.com wrote:
 I think I am not lucky :-(

 $ aplaymidi -l
  PortClient name  Port name
  14:0Midi Through Midi Through Port-0

 I get the same either the iPad is connected or not.
 So I guess is not recognized.
 Shame.

 I'll keep on investigating, hopefully without loosing any of my neurons.

Yeah, this is the bit where you have to poke around with iPad stuff.
They say there's an app for that; maybe there's a way to turn an
iPad into a USB MIDI device. I did a quick Google search for 'ipad usb
midi' and there seem to be some decent hits, so your luck mightn't
have completely run out yet.

ChrisA
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Re: mysql solution

column 'pin' is an 5-digit integer auto_increment primary key.

What i want is to insert a new record or update the existing one, if 'pin' 
column's value exist. The following statement fails.

[code]
cursor.execute( '''INSERT INTO counters(page, hits) VALUES(%s, %s) RETURNING 
(pin) 
ON DUPLICATE KEY UPDATE hits = hits + 1''', (htmlpage, 
1) )
[/code] 

Also except from the inserting/updating job, i also need 'pin' colum's value to 
be extracted from the above statement so to be used to subsequent statement 
like the following. This is not happening, hence the following statement have 
no way to find 'pin' column's value which is to be used as a parameter to it.

[code]
cursor.execute( '''UPDATE visitors SET hits = hits + 1, useros = %s, browser = 
%s, date = %s WHERE pin = %s AND host = %s''', (useros, browser, date, pin, 
host)) 
[/code]

Can someone correct this please and explain?
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Re: mysql solution

Τη Πέμπτη, 24 Ιανουαρίου 2013 1:16:51 μ.μ. UTC+2, ο χρήστης Chris Angelico 
έγραψε:
 On Thu, Jan 24, 2013 at 10:04 PM, Ferrous Cranus nikos.gr...@gmail.com 
 wrote:
 
  I;am now convinced the hash solution isn't reversible and also isn't unique.
 
  I'am trying the database oriented solution.
 
 
 
 Glad you've listened to at least some of what you've been told. But if
 
 you want to be taken seriously on this list, I recommend going back to
 
 your previous name of Νικόλαος Κούρας (which Google Translate tells me
 
 transliterates as Nicholas Kouri), apologizing for trolling, and being
 
 VERY careful to be respectful. I suspect a number of the list's best
 
 posters have already killfiled you.

First of all i'am not trolling, it looks like i'am trolling because i persist 
on my way of handling a problem.

Secondly, why go back to that handle?
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Re: mysql solution

Ferrous Cranus nikos.gr...@gmail.com writes:

 The following statement fails.

 [code]
 cursor.execute( '''INSERT INTO counters(page, hits) VALUES(%s, %s) RETURNING 
 (pin) 
 ON DUPLICATE KEY UPDATE hits = hits + 1''', 
 (htmlpage, 1) )
 [/code] 

How? What's the error message/traceback?

If, as Chris said, MySQL does not support the “RETURNING” syntax, you
cannot use that. I gave two different solutions in my previous message,
did you try the “simplest” one?

ciao, lele.
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real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia.
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Re: Retrieving the full command line

On 24/01/2013 11:30, Oscar Benjamin wrote:
 I don't really understand what your spec is. Why do you need to
 inspect this information from sys.argv? Can you not just always use
 'python -m pkg' as your entry point?

Sorry about the confusion. I think my original point was simply one
of surprise that sys.argv wouldn't essentially mirror the elements
of the command line which I used to get there.
The specifics of my use-case weren't really too important.

For completeness, I'm talking about the cherrypy Autoreloader which
attempts to restart (via execv) whatever process was responsible for
loading it in the first place, via an identical or equivalent command
line. The current (cherrypy) code simply joins sys.executable and
sys.argv but this fails in the face of python -m as we have seen.

The cherrypy package has no especial knowledge of the structure of the
application which imported it and so must piece together the command
line somehow. Clearly, I can take various approaches of the sort
which you've outlined, or subclass the reloader, or fetch the original
command line from the OS, etc. It's not that this is a showstopper,
merely slightly surprising. (To me).

TJG
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anyone can make a Python bindings of VLC-Qt ?

2013-01-24 Thread iMath


anyone can make a Python bindings of VLC-Qt  ?
https://github.com/ntadej/vlc-qt
accurately, can anyone make a  PyQt bindings of VLC-Qt  ?
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Re: mysql solution

Τη Πέμπτη, 24 Ιανουαρίου 2013 3:37:24 μ.μ. UTC+2, ο χρήστης Lele Gaifax έγραψε:

 How? What's the error message/traceback?

REURNING is not a correct mysql syntax thats why it produces errors.

 If, as Chris said, MySQL does not support the “RETURNING” syntax, you
 
 cannot use that. I gave two different solutions in my previous message,
 
 did you try the “simplest” one?

SELECT pin FROM counters WHERE page = %s 

I can do that but then i have to use that pin column's value in my next 
statement.

cursor.execute( '''UPDATE visitors SET hits = hits + 1, useros = %s, browser = 
%s, date = %s WHERE pin = %s AND host = %s''', (useros, browser, date, pin, 
host)) 
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Re: mysql solution

On Fri, Jan 25, 2013 at 12:31 AM, Ferrous Cranus nikos.gr...@gmail.com wrote:
Τη Πέμπτη, 24 Ιανουαρίου 2013 1:16:51 μ.μ. UTC+2, ο χρήστης Chris Angelico
έγραψε:
Glad you've listened to at least some of what you've been told. But if
you want to be taken seriously on this list, I recommend going back to
your previous name of Νικόλαος Κούρας (which Google Translate tells me
transliterates as Nicholas Kouri), apologizing for trolling, and being
VERY careful to be respectful. I suspect a number of the list's best
posters have already killfiled you.

First of all i'am not trolling, it looks like i'am trolling because i persist
on my way of handling a problem.

Then why do you use, as your name, something which everyone who tries
a quick web search will see is the name of a category of troll? And,
what's more, a category which clearly includes you?

Python believes in duck typing. Instead of writing a function that
expects a File object, Python tends toward writing functions that
expect an object that can be given data to write() out. Or, instead of
looking for an integer, Python code will look for something that can
be added to 5. In the same way, we on this list do not ask are you a
troll. We ask does your behaviour match that of a troll. You are
treated as a troll because you act like one.

Secondly, why go back to that handle?

That said, though, carrying the name of a troll doesn't help. Using
your real name is the best way to get started. If you want to win
respect, you want to win it for yourself, not for some strange title.
(There are exceptions to that principle. Some people on the list don't
use their names, and I'm on another list where one of the regular
posters freely admits that the name John Spartan isn't actually his.
But in general, you should use your real name.)

Among geeks (and this list/newsgroup is full of them), respect is
everything. You earn it, you give it. The best ways to earn respect
are to give respect and to contribute to the community. Contributing
is fairly obvious; answering questions, helping out, submitting
patches, triaging bugs, reviewing and confirming bug reports. Stuff
that takes time and benefits other people. The top dogs in a geeky
community are usually the ones who give the most time. I've no idea
how many hours Guido puts into Python, but it'll be rather a lot.

Giving respect is a little harder to define, but just as important.
The main thing to remember is that we, here, helping you, are
volunteers. Nobody is paying us to solve your problems, especially not
you yourself. Demanding that we solve your problems is NOT respectful.
Offering us interesting problems (which we enjoy), following up
courteously, helping to maintain the community's standards (even in
supposedly-trivial matters like bottom-posting), and doing your own
work before asking for help, ARE. I recently dropped someone a private
note thanking him for the way he phrased his question, because it made
for a very interesting little puzzle, and he'd clearly put work into
it. It was a pleasure to help him, cliche though that sound. He was
respectful of the time people would put in, and afterward of the time
they had put in, and thus he won respect.

Ferrous/Nicholas, you are currently looking like that very worst thing
on a mailing list: an open-ended time sink. You are looking like
you'll cost huge numbers of smart-person-hours (that's like man-hours
but not gender specific, or like programmer-hours but less mythical)
with little or no benefit to the community. Continue down this path
and you will find yourself with nobody to talk to, as everyone will
decide that the best use of time is to delete your posts unread.

ChrisA
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Re: anyone can make a Python bindings of VLC-Qt ?

On Fri, Jan 25, 2013 at 1:25 AM, iMath redstone-c...@163.com wrote:

 anyone can make a Python bindings of VLC-Qt  ?
 https://github.com/ntadej/vlc-qt
 accurately, can anyone make a  PyQt bindings of VLC-Qt  ?

Yes, someone can. Ideally, someone who knows C++, Python, VLC, and Qt,
and has the time to port the code you just linked to. It'll probably
be a fairly big job, but relatively straight-forward for someone who
knows. That someone isn't me, though (I don't know Qt, and I'm not
familiar with VLC's internals - my knowledge of VLC is just as a
user); maybe it's you?

ChrisA
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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread John Gordon

In a7c3d4a0-3277-428b-8cfc-c52ea585b...@googlegroups.com Hazard Seventyfour 
hseventyf...@gmail.com writes:

 Hello,

 I new in this python and decided to learn more about it, so i can make
 an own script :),

 for all senior can you suggest me the best, friendly and easy use with
 nice GUI editor for me, and have many a good features such as auto
 complete/auto correct.

Try PyScripter.

http://code.google.com/p/pyscripter/

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gor...@panix.com  B is for Basil, assaulted by bears
-- Edward Gorey, The Gashlycrumb Tinies

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Re: mysql solution

2013-01-24 Thread Duncan Booth

Ferrous Cranus nikos.gr...@gmail.com wrote:

 I can do that but then i have to use that pin column's value in my
 next statement. 
 
 cursor.execute( '''UPDATE visitors SET hits = hits + 1, useros = %s,
 browser = %s, date = %s WHERE pin = %s AND host = %s''', (useros,
 browser, date, pin, host)) 

I'm not MySQL expert, but something like this might work:

cursor.execute('''UPDATE visitors,counter 
SET visitors.hits=visitors.hits+1, visitors.useros=%s,
visitors.browser =%s, visitors.date=%s
WHERE visitors.pin=counter.pin AND counter.page = %s 
AND visitors.host=%s''',
   (useros, browser, date, page, host))

-- 
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Re: mysql solution

On Fri, Jan 25, 2013 at 2:19 AM, Duncan Booth
duncan.booth@invalid.invalid wrote:
 Ferrous Cranus nikos.gr...@gmail.com wrote:

 I can do that but then i have to use that pin column's value in my
 next statement.

 cursor.execute( '''UPDATE visitors SET hits = hits + 1, useros = %s,
 browser = %s, date = %s WHERE pin = %s AND host = %s''', (useros,
 browser, date, pin, host))

 I'm not MySQL expert, but something like this might work:

 cursor.execute('''UPDATE visitors,counter
 SET visitors.hits=visitors.hits+1, visitors.useros=%s,
 visitors.browser =%s, visitors.date=%s
 WHERE visitors.pin=counter.pin AND counter.page = %s
 AND visitors.host=%s''',
(useros, browser, date, page, host))

Not sure that that works. This should, though:

UPDATE visitors SET hits=hits+1,blah,blah WHERE visitors.pin=(SELECT
pin FROM counter WHERE page=%s)

I prefer not to mention a table for updating if it's not actually being updated.

ChrisA
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Re: Retrieving the full command line

On 24 January 2013 13:45, Tim Golden m...@timgolden.me.uk wrote:
 On 24/01/2013 11:30, Oscar Benjamin wrote:
 I don't really understand what your spec is. Why do you need to
 inspect this information from sys.argv? Can you not just always use
 'python -m pkg' as your entry point?

[SNIP]

 For completeness, I'm talking about the cherrypy Autoreloader which
 attempts to restart (via execv) whatever process was responsible for
 loading it in the first place, via an identical or equivalent command
 line. The current (cherrypy) code simply joins sys.executable and
 sys.argv but this fails in the face of python -m as we have seen.

 The cherrypy package has no especial knowledge of the structure of the
 application which imported it and so must piece together the command
 line somehow. Clearly, I can take various approaches of the sort
 which you've outlined, or subclass the reloader, or fetch the original
 command line from the OS, etc. It's not that this is a showstopper,
 merely slightly surprising. (To me).

Ok I understand. Then I guess you want:

import __main__
pkg = __main__.__package__


Oscar
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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread Sharwan Joram

On Thursday, January 24, 2013 8:42:19 PM UTC+5:30, John Gordon wrote:
 In a7c3d4a0-3277-428b-8cfc-c52ea585b...@googlegroups.com Hazard Seventyfour 
 hseventyf...@gmail.com writes:
 
 
 
  Hello,
 
 
 
  I new in this python and decided to learn more about it, so i can make
 
  an own script :),
 
 
 
  for all senior can you suggest me the best, friendly and easy use with
 
  nice GUI editor for me, and have many a good features such as auto
 
  complete/auto correct.
 
 
 
 Try PyScripter.
 
 
 
 http://code.google.com/p/pyscripter/
 
 
 
 -- 
 
 John Gordon   A is for Amy, who fell down the stairs
 
 gor...@panix.com  B is for Basil, assaulted by bears
 
 -- Edward Gorey, The Gashlycrumb Tinies

use vim.

~Sharwan Joram
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Re: mysql solution

Duncan Booth duncan.booth@invalid.invalid writes:

 I'm not MySQL expert, but something like this might work:

 cursor.execute('''UPDATE visitors,counter 
 SET visitors.hits=visitors.hits+1, visitors.useros=%s,
 visitors.browser =%s, visitors.date=%s
 WHERE visitors.pin=counter.pin AND counter.page = %s 
 AND visitors.host=%s''',
(useros, browser, date, page, host))

I stopped surprising at MySQL syntax eons ago, so if that works... great!

Otherwise I would write the equivalent statement with a more standard
syntax (for whatever meaning of standard in the SQL world :-) as:

UPDATE visitors
   SET visitors.hits=visitors.hits+1, 
   visitors.useros=%s,
   visitors.browser=%s, 
   visitors.date=%s
WHERE visitors.pin=(SELECT counters.pin
FROM counters
WHERE counters.page=%s)
  AND visitors.host=%s

But I wonder about the logic here: why are you storing the useros,
browser and date in a table where the primary key seems to be
(pin, host)? I mean, what happens if a user visits the same page
twice, first with Firefox and then with Chrome?

hope this helps,
ciao, lele.
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real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia.
l...@metapensiero.it  | -- Fortunato Depero, 1929.

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Re: Retrieving the full command line

On 24/01/2013 15:28, Oscar Benjamin wrote:
 On 24 January 2013 13:45, Tim Golden m...@timgolden.me.uk wrote:
 On 24/01/2013 11:30, Oscar Benjamin wrote:
 I don't really understand what your spec is. Why do you need to
 inspect this information from sys.argv? Can you not just always use
 'python -m pkg' as your entry point?

 [SNIP]

 For completeness, I'm talking about the cherrypy Autoreloader which
 attempts to restart (via execv) whatever process was responsible for
 loading it in the first place, via an identical or equivalent command
 line. The current (cherrypy) code simply joins sys.executable and
 sys.argv but this fails in the face of python -m as we have seen.

 The cherrypy package has no especial knowledge of the structure of the
 application which imported it and so must piece together the command
 line somehow. Clearly, I can take various approaches of the sort
 which you've outlined, or subclass the reloader, or fetch the original
 command line from the OS, etc. It's not that this is a showstopper,
 merely slightly surprising. (To me).
 
 Ok I understand. Then I guess you want:
 
 import __main__
 pkg = __main__.__package__

Brilliant. Never thought of importing __main__. Thanks.

For the benefit of anyone still watching, the code (which has to be
compatible back to 2.3) looks something like this:

code
import __main__

# [.. .snip ...]

try:
is_package = bool(__main__.__package__)
except NameError:
is_package = False
if is_package:
args = [sys.executable, '-m', __main__.__package__] + sys.argv[1:]
else:
args = [sys.executable] + sys.argv

os.chdir(_startup_cwd) # avoids relative/absolute issues
os.execv(args[0], args)

/code

I don't pretend it's foolproot, but it certainly works for my particular
case. Nor have I considered it against all the cases identified in PEP
432: http://www.python.org/dev/peps/pep-0432/#configuring-sys-argv

TJG

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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread rusi

On Jan 24, 2:43 pm, Hazard Seventyfour hseventyf...@gmail.com wrote:
 Hello,

 I new in this python and decided to learn more about it, so i can make an own 
 script :),

 for all senior can you suggest me the best, friendly and easy use with nice 
 GUI editor for me, and have many a good features such as auto complete/auto 
 correct.

 any recommend? Thanks ^_^

What editor you use does not matter. What matters is that you learn to
use the interpreter.

That is learn to use things like
- history
- last expression with _ (underscore)
- Using introspection to find out about odd stuff (ie use dir and
help)
- Loading a python file
- And after things kind-of work, copy pasting into your editor

Here's a test to check whether youve got the idea: Do you think that
to write a program you need to write a 'main?' If yes then no!

[I personally use emacs. It would be sadistic to make that into a
recommendation]
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Re: The best, friendly and easy use Python Editor.

On Fri, Jan 25, 2013 at 2:54 AM, rusi rustompm...@gmail.com wrote:
 - last expression with _ (underscore)

Small terminology quibble: That's not last expression, but last non-None result.

 1+2
3
 _
3
 _,None
(3, None)
 _
(3, None)
 _[1]
 _
(3, None)

Otherwise, agree totally. Get to know the interactive interpreter, and
keep it handy.

ChrisA
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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread John Gordon

In ccf57220-4367-4611-b91b-5bf2a51e3...@googlegroups.com Sharwan Joram 
sharwan.jo...@gmail.com writes:

 use vim.

He said he wanted autocomplete.  Does Vim have that?

-- 
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gor...@panix.com  B is for Basil, assaulted by bears
-- Edward Gorey, The Gashlycrumb Tinies

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Re: Retrieving the full command line

On 24 January 2013 15:51, Tim Golden m...@timgolden.me.uk wrote:
 On 24/01/2013 15:28, Oscar Benjamin wrote:
 On 24 January 2013 13:45, Tim Golden m...@timgolden.me.uk wrote:
 On 24/01/2013 11:30, Oscar Benjamin wrote:
 I don't really understand what your spec is. Why do you need to
 inspect this information from sys.argv? Can you not just always use
 'python -m pkg' as your entry point?

 [SNIP]

 For completeness, I'm talking about the cherrypy Autoreloader which
 attempts to restart (via execv) whatever process was responsible for
 loading it in the first place, via an identical or equivalent command
 line. The current (cherrypy) code simply joins sys.executable and
 sys.argv but this fails in the face of python -m as we have seen.

 The cherrypy package has no especial knowledge of the structure of the
 application which imported it and so must piece together the command
 line somehow. Clearly, I can take various approaches of the sort
 which you've outlined, or subclass the reloader, or fetch the original
 command line from the OS, etc. It's not that this is a showstopper,
 merely slightly surprising. (To me).

 Ok I understand. Then I guess you want:

 import __main__
 pkg = __main__.__package__

 Brilliant. Never thought of importing __main__. Thanks.

 For the benefit of anyone still watching, the code (which has to be
 compatible back to 2.3) looks something like this:

 code
 import __main__

 # [.. .snip ...]

 try:
 is_package = bool(__main__.__package__)
 except NameError:
 is_package = False
 if is_package:
 args = [sys.executable, '-m', __main__.__package__] + sys.argv[1:]
 else:
 args = [sys.executable] + sys.argv

 os.chdir(_startup_cwd) # avoids relative/absolute issues
 os.execv(args[0], args)

 /code

 I don't pretend it's foolproot, but it certainly works for my particular
 case. Nor have I considered it against all the cases identified in PEP
 432: http://www.python.org/dev/peps/pep-0432/#configuring-sys-argv

Does it work if you use the -m option to run a module rather than a script?


Oscar
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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread Thomas Heller


Am 24.01.2013 16:54, schrieb rusi:

[I personally use emacs. It would be sadistic to make that into a
recommendation]


It would be truly sadistic to force a long-time emacs user to any
other editor.

Thomas
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Re: Retrieving the full command line

On 24 January 2013 16:08, Oscar Benjamin oscar.j.benja...@gmail.com wrote:
 On 24 January 2013 15:51, Tim Golden m...@timgolden.me.uk wrote:
 On 24/01/2013 15:28, Oscar Benjamin wrote:
 On 24 January 2013 13:45, Tim Golden m...@timgolden.me.uk wrote:
 On 24/01/2013 11:30, Oscar Benjamin wrote:
 I don't really understand what your spec is. Why do you need to
 inspect this information from sys.argv? Can you not just always use
 'python -m pkg' as your entry point?

 [SNIP]

 For completeness, I'm talking about the cherrypy Autoreloader which
 attempts to restart (via execv) whatever process was responsible for
 loading it in the first place, via an identical or equivalent command
 line. The current (cherrypy) code simply joins sys.executable and
 sys.argv but this fails in the face of python -m as we have seen.

 The cherrypy package has no especial knowledge of the structure of the
 application which imported it and so must piece together the command
 line somehow. Clearly, I can take various approaches of the sort
 which you've outlined, or subclass the reloader, or fetch the original
 command line from the OS, etc. It's not that this is a showstopper,
 merely slightly surprising. (To me).

 Ok I understand. Then I guess you want:

 import __main__
 pkg = __main__.__package__

 Brilliant. Never thought of importing __main__. Thanks.

 For the benefit of anyone still watching, the code (which has to be
 compatible back to 2.3) looks something like this:

 code
 import __main__

 # [.. .snip ...]

 try:
 is_package = bool(__main__.__package__)
 except NameError:
 is_package = False
 if is_package:
 args = [sys.executable, '-m', __main__.__package__] + sys.argv[1:]
 else:
 args = [sys.executable] + sys.argv

 os.chdir(_startup_cwd) # avoids relative/absolute issues
 os.execv(args[0], args)

 /code

 I don't pretend it's foolproot, but it certainly works for my particular
 case. Nor have I considered it against all the cases identified in PEP
 432: http://www.python.org/dev/peps/pep-0432/#configuring-sys-argv

 Does it work if you use the -m option to run a module rather than a script?

Sorry that was written incorrectly. I meant to say: does it work when
a module is directly on sys.path rather than as a submodule of a
package? In this case __package__ is set to the empty string if run
with -m or None if run with a direct path. So the check needs to be
__package__ is not None rather than bool(__package__).


Oscar
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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread Tim Chase


On 01/24/13 10:23, Thomas Heller wrote:

Am 24.01.2013 16:54, schrieb rusi:

[I personally use emacs. It would be sadistic to make that into a
recommendation]


It would be truly sadistic to force a long-time emacs user to any
other editor.


I saw the recommendation for Vim elsewhere on the thread and comment 
the same as this sub-thread: I personally use vim. It would be 
sadistic to make that into a recommendation  And likewise, it's 
truly sadistic to force a long-time vim user to any other editor. :-)


Not that Vim isn't great for programming Python (which I do 
daily)...it *is*!  It's just not where I'd throw somebody who 
doesn't already have an existing editor preference *and* doesn't 
know Python.


-tkc





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monolithic apps

2013-01-24 Thread tamnt54

Any suggestions for study?..:
 Is is possible to take a large executable with GUI and real time data and 
images, to extract modules, and it can run as if it looks like a monolithic 
application (windows over main windows, or images over other images) but is 
various python script driven modules calling each other as separate apps?
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Re: Retrieving the full command line

On 24/01/2013 16:53, Oscar Benjamin wrote:
 Does it work if you use the -m option to run a module rather than a script?
 
 Sorry that was written incorrectly. I meant to say: does it work when
 a module is directly on sys.path rather than as a submodule of a
 package? In this case __package__ is set to the empty string if run
 with -m or None if run with a direct path. So the check needs to be
 __package__ is not None rather than bool(__package__).

The answer is: it depends. Given the code I outlined earlier:

A package-based module run via -m (python -m package.module) works
as described (including the implicit __main__ module, my
primary use-case).

A module run from the filesystem (python c:\path\to\module.py) works
by dropping through through to the not is_package logic branch.

A module run via -m (python -m module) actually works by accident,
because it too drops through to the not is_package branch and is
rerun with its full filesystem path. This doesn't have the same
problems as running a package from the filesystem because relative
imports aren't an issue. I don't know if there are any other differences
between python -mmodule and python c:\path\to\module.py.

As you say, a more refined check could determine a blank __package__
as opposed to a None __package__. But this code (cherrypy) must also
cope with version of Python before 2.6 which didn't even have a
__package__ attribute, muddying the waters that little bit further.

TJG
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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread Andrew Gudovich

I think PyCharm is ideal for you.

http://www.jetbrains.com/pycharm/
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Re: monolithic apps

2013-01-24 Thread Dave Angel


On 01/24/2013 12:06 PM, tamn...@gmail.com wrote:

Any suggestions for study?..:
  Is is possible to take a large executable with GUI and real time data and 
images, to extract modules, and it can run as if it looks like a monolithic 
application (windows over main windows, or images over other images) but is 
various python script driven modules calling each other as separate apps?



I can see at least 4 things you might mean.  Perhaps you'd better spell 
it out.


1) glom all the scripts  binary modules into one big file, so the user 
thinks it's one huge app


2) Manipulate multiple gui apps while having the same UI as though there 
was just one main window, and other windows all belong to it.  Multiple 
GUI processes, but some central control to change the user experience 
into resembling a single GUI app.


3) Have one gui app main that other apps can somehow call to 
manipulate the windows of main.  Multiple processes, only one of them 
with a GUI.


4) From a GUI app, use other apps as loadable modules, and reuse their 
class definitions and functions by calling them from the GUI app.  One 
process.



You say this a topic for study, but there's a lot of other things you 
may need to specify before you get to implementing.  What OS, what 
version of Python, what GUI, are these apps modifiable, or are you just 
allowed to write glue, ...


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Changing the font size of anOptionMenu widget

2013-01-24 Thread Angel

I am changing the font of an OptionMenu widget:

w = OptionMenu(master, variable, one, two, three)

with 

w.configure()

That changes the font of the widget but how can I change also the font (size) 
of the menu that appears when the mouse clicks it?

Thanks in advandce,

A. 
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Re: monolithic apps

2013-01-24 Thread Ulrich Eckhardt


Am 24.01.2013 18:06, schrieb tamn...@gmail.com:

Any suggestions for study?..: Is is possible to take a large
executable with GUI and real time data and images, to extract
modules, and it can run as if it looks like a monolithic application
(windows over main windows, or images over other images) but is
various python script driven modules calling each other as separate
apps?



http://www.gnu.org/software/hurd/

Uli

g,dr
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Re: mysql solution

Τη Πέμπτη, 24 Ιανουαρίου 2013 5:39:54 μ.μ. UTC+2, ο χρήστης Lele Gaifax έγραψε:

 UPDATE visitors
 
SET visitors.hits=visitors.hits+1, 
 
visitors.useros=%s,
 
visitors.browser=%s, 
 
visitors.date=%s
 
 WHERE visitors.pin=(SELECT counters.pin
 
 FROM counters
 
 WHERE counters.page=%s)
 
   AND visitors.host=%s
 
 
 
 But I wonder about the logic here: why are you storing the useros,
 
 browser and date in a table where the primary key seems to be
 
 (pin, host)? I mean, what happens if a user visits the same page
 
 twice, first with Firefox and then with Chrome?


it doesn't work, it creates new entries on every webpage visit instead of 
updating.

this is what i have up until now:

[code]
# insert new page record in table counters or update it if already 
exists
try:
cursor.execute( '''INSERT INTO counters(page, hits) VALUES(%s, 
%s)
ON DUPLICATE 
KEY UPDATE hits = hits + 1''', (htmlpage, 1) )
except MySQLdb.Error, e:
print ( Error %d: %s % (e.args[0], e.args[1]) )

# update existing visitor record if same pin and same host found
try:
cursor.execute('''UPDATE visitors SET hits=hits+1, useros=%s, 
browser=%s, date=%s 
  WHERE id=(SELECT id FROM 
counters WHERE page=%s) AND host=%s''',

(useros, browser, date, htmlpage, host))
except MySQLdb.Error, e:
print ( Error %d: %s % (e.args[0], e.args[1]) )

# insert new visitor record if above update did not affect a row
if cursor.rowcount == 0:
cursor.execute( '''INSERT INTO visitors(hits, host, useros, 
browser, date) VALUES(%s, %s, %s, %s, %s)''', (1, host, useros, browser, date) )
[/code]

Something is definately wrong here, its logic is not correct.
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Re: Increase value in hash table

2013-01-24 Thread Vito De Tullio

moonhkt wrote:

 Data file
 V1
 V2
 V3
 V4
 V4
 V3
 
 How to using count number of data ?
 
 Output
 V1 = 1
 V2 = 1
 V3 =2
 V4 = 2

import collections

with open(data_file) as f:
print(collections.Counter(f.readlines()))


it's a start

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Search Engine optimization technique

2013-01-24 Thread Marlen Coner

jilltoler.com is a web blog where you can find WHAT IS Search Engine
optimization, what is SEO Analytics, and how to you SEO tools and
Importance of SEO Rankings.

For more information please visit : http://www.jilltoler.com
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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread Walter Hurry

On Thu, 24 Jan 2013 22:10:21 +1100, Chris Angelico wrote:

 On Thu, Jan 24, 2013 at 8:43 PM, Hazard Seventyfour
 hseventyf...@gmail.com wrote:
 Hello,

 I new in this python and decided to learn more about it, so i can make
 an own script :),

 for all senior can you suggest me the best, friendly and easy use with
 nice GUI editor for me, and have many a good features such as auto
 complete/auto correct.

 any recommend? Thanks ^_^
 
 Here we go, it's holy war time again! :)
 
 You'll get a HUGE lot of responses. Many use emacs or vim, and you'll
 get a few recommendations for IDLE. After that, it's a huge field of
 options. I personally use SciTE; it's a good editor, but I don't
 particularly like the way the project is run (nothing strong, but I
 didn't like the tone on its mailing list). Eclipse has its fans, too.
 
 A Python IDE is not nearly as beneficial as, say, a Java IDE. A good
 Python editor just needs to do the basics like indentation, syntax
 highlighting, and such; I like IDLE's method info when I'm working
 interactively, but it's not a big deal when I'm writing a program. In
 fact, all you really need out of an IDE can probably be supplied by just
 a good editor, maybe a makefile, and alt-tabbing to IDLE. However, if
 you want an IDE, they do exist.

All true (especially the holy wars bit!). OP didn't (as far as I can see) 
even say which OS he is using. Anyway, my suggestion is generally that 
people use the editor with which they are already comfortable.
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Re: Python to send Midi commands to iPad via USB

2013-01-24 Thread rusi

On Jan 24, 3:31 pm, mikp...@gmail.com wrote:
 Dear all,

 I am asking for a design/strategy suggestion.

 What I have to do is to write a Python application that will send MIDI 
 commands to an iPad application.
 All I know is that the iPad application can be connected to an external Midi 
 deck through a usb cable and be controlled.
 So I think I would connect the iPad via USB to my computer and... try to send 
 midi commands.
 I think the limitation is that the iPad will allow signaling/connection only 
 to Midi devices, so I have to make so that my Python script pretends that my 
 computer is a Midi device.
 So far I have tried PyUSB library and I can see the iPad, but I can't send 
 anything to it (probably because I am not pretending to be a Midi device well 
 enough).

 I am keen to try PyUSB + pygame for the Midi stuff.

 Any suggestion / recommendation / hint / whatever to tell me?
 I appreciate every idea at this stage!

 Thanks for reading,
 Mik

Some suggestions:
1. The linux audio list will serve you better than the python list for
this line of questions
2. Before worrying about python get your 'plumbing' right with
dedicated midi s/w like rosegarden, qtractor etc
3. [I dont understand much midi but…] look at aconnect, aseqnet in
addition to pmidi, aplaymidi
4. On some recent linuxes, (notably ubuntu) timidity is broken thanks
to pulseaudio. In particular, timidity as a normal program works does
not imply that timidity as a server works
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RE: The best, friendly and easy use Python Editor.

2013-01-24 Thread Leonard, Arah

 All true (especially the holy wars bit!). OP didn't (as far as I can see) 
 even say which OS he is using. Anyway, my suggestion is generally that people 
 use the editor with which they are already comfortable.
 

Sound advice.  Most of the time I still use Visual Studio for editing Python 
because I also use it for C++, so it's just what I'm used to.  No big deal, 
really.  Whatever works is what works.  It's just a text file after all.
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Re: Retrieving the full command line

On 24 January 2013 17:13, Tim Golden m...@timgolden.me.uk wrote:
 On 24/01/2013 16:53, Oscar Benjamin wrote:
 Does it work if you use the -m option to run a module rather than a script?

 Sorry that was written incorrectly. I meant to say: does it work when
 a module is directly on sys.path rather than as a submodule of a
 package? In this case __package__ is set to the empty string if run
 with -m or None if run with a direct path. So the check needs to be
 __package__ is not None rather than bool(__package__).

 The answer is: it depends. Given the code I outlined earlier:

 A package-based module run via -m (python -m package.module) works
 as described (including the implicit __main__ module, my
 primary use-case).

Does it work in the python -m package.module case? It looks to me as
if the code below will run python -m package instead. I think you
need to split the module name out of sys.argv[0] and put that into the
command line as well.

 import __main__

 # [.. .snip ...]

 try:
 is_package = bool(__main__.__package__)
 except NameError:
 is_package = False
 if is_package:
 args = [sys.executable, '-m', __main__.__package__] + sys.argv[1:]
 else:
 args = [sys.executable] + sys.argv

 os.chdir(_startup_cwd) # avoids relative/absolute issues
 os.execv(args[0], args)

I believe python -m package and python -m package.__main__ are
equivalent so it doesn't matter in that case.


 A module run from the filesystem (python c:\path\to\module.py) works
 by dropping through through to the not is_package logic branch.

 A module run via -m (python -m module) actually works by accident,
 because it too drops through to the not is_package branch and is
 rerun with its full filesystem path. This doesn't have the same
 problems as running a package from the filesystem because relative
 imports aren't an issue. I don't know if there are any other differences
 between python -mmodule and python c:\path\to\module.py.

There is a (probably pathological) case in which running the script
via a file path and running it via -m are not equivalent. python
dir/script.py places dir at the top of sys.path. python -m script
only works if dir is in sys.path but it needn't be at the top. This
means that the order of sys.path is changed and import conflicts may
be resolved differently in the two cases:

~$ cat ~/.local/lib/python2.7/site-packages/script.py
print(Running script.py)
import optparse
~$ cat ~/.local/lib/python2.7/site-packages/optparse.py
raise ImportError('Wrong optparse!')
~$ python ~/.local/lib/python2.7/site-packages/script.py
Running script.py
Traceback (most recent call last):
  File /home/oscar/.local/lib/python2.7/site-packages/script.py,
line 2, in module
import optparse
  File /home/oscar/.local/lib/python2.7/site-packages/optparse.py,
line 1, in module
raise ImportError('Wrong optparse!')
ImportError: Wrong optparse!
~$ python -m script
Running script.py
~$ python ~/.local/lib/python2.7/site-packages/script.py
Running script.py
Traceback (most recent call last):
  File /home/oscar/.local/lib/python2.7/site-packages/script.py,
line 2, in module
import optparse
  File /home/oscar/.local/lib/python2.7/site-packages/optparse.py,
line 1, in module
raise ImportError('Wrong optparse!')
ImportError: Wrong optparse!
~$ python -m script
Running script.py


 As you say, a more refined check could determine a blank __package__
 as opposed to a None __package__. But this code (cherrypy) must also
 cope with version of Python before 2.6 which didn't even have a
 __package__ attribute, muddying the waters that little bit further.

Then you won't be able to use this method to get the -m switch to work
on Python  2.6. If it's ok to just never try the -m switch on those
versions then it's as simple as doing:
pkg = getattr(__main__, '__package__', None)


Oscar
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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread Dave Hirschfeld

Leonard, Arah Arah.Leonard at bruker-axs.com writes:

 
  All true (especially the holy wars bit!). OP didn't (as far as I can see) 
 even say which OS he is using.
 Anyway, my suggestion is generally that people use the editor with which 
  they are already comfortable.
  
 
 Sound advice.  Most of the time I still use Visual Studio for editing Python 
 because I also use it for C++, so
 it's just what I'm used to.  No big deal, really.  Whatever works is what 
 works. It's just a text file after all.
 

I assume you're using PyTools (http://pytools.codeplex.com/)?

-Dave

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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread Neil Cerutti

On 2013-01-24, John Gordon gor...@panix.com wrote:
 In ccf57220-4367-4611-b91b-5bf2a51e3...@googlegroups.com Sharwan Joram 
 sharwan.jo...@gmail.com writes:

 use vim.

 He said he wanted autocomplete.  Does Vim have that?

Yes, you use its ctags support to get it working, I believe.

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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread Neil Cerutti

On 2013-01-24, Tim Chase python.l...@tim.thechases.com wrote:
 On 01/24/13 10:23, Thomas Heller wrote:
 Am 24.01.2013 16:54, schrieb rusi:
 [I personally use emacs. It would be sadistic to make that into a
 recommendation]

 It would be truly sadistic to force a long-time emacs user to any
 other editor.

 I saw the recommendation for Vim elsewhere on the thread and comment 
 the same as this sub-thread: I personally use vim. It would be 
 sadistic to make that into a recommendation  And likewise, it's 
 truly sadistic to force a long-time vim user to any other editor. :-)

 Not that Vim isn't great for programming Python (which I do 
 daily)...it *is*!  It's just not where I'd throw somebody who 
 doesn't already have an existing editor preference *and* doesn't 
 know Python.

I agree.

Vim is great, Emacs is great. I'm glad I know one of them. But
learning one of them is as project unto itself. So selecting
either just for Python is skipping too many decisions and maybe
biting off too big a piece of the snake.

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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread Tim Chase


On 01/24/13 13:34, Leonard, Arah wrote:

All true (especially the holy wars bit!). OP didn't (as far as
I can see) even say which OS he is using. Anyway, my suggestion
is generally that people use the editor with which they are
already comfortable.


Sound advice.  [snip] Whatever works is what works. It's just a
text file after all.


So even ed or edlin or even cat would do ;-)
?
-tkc
?
wq




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RE: The best, friendly and easy use Python Editor.

2013-01-24 Thread Leonard, Arah

 Sound advice.  Most of the time I still use Visual Studio for editing 
 Python because I also use it for C++, so it's just what I'm used to.  
 No big deal, really.  Whatever works is what works. It's just a text 
 file after all.
 
 
 I assume you're using PyTools (http://pytools.codeplex.com/)?
 

Would that I could!  To my knowledge they still haven't backported PyTools to 
VS2008, which I'm presently stuck on because Python 2.7 still doesn't compile 
on VS2010.  :(

Kind of makes you think...
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Re: Retrieving the full command line


On 24/01/2013 20:01, Oscar Benjamin wrote:

On 24 January 2013 17:13, Tim Golden m...@timgolden.me.uk wrote:

A package-based module run via -m (python -m package.module) works
as described (including the implicit __main__ module, my
primary use-case).


Does it work in the python -m package.module case? It looks to me as
if the code below will run python -m package instead. I think you
need to split the module name out of sys.argv[0] and put that into the
command line as well.


Good catch. Unless I am, once again, mistaken, I can't see any way
of recreating a dotted module path which is running as a main module
without the somewhat fragile expedient of walking back up the
filepath and hoping that nothing strange has happened to the imports
on the way down? (pywin32: I'm looking at you!)

And we haven't even touched on zipped archives or other invented
loaders (pulling modules from a database or direct from the internet).

I think, though, that the point which with I started this thread is
still valid: that to reconstruct the command line with which Python
was started, you need an increasingly awkward set of conditions and
checks. As opposed to asking the interpreter: please give me the command
line which started you.

How common that particular requirement actually is, I couldn't say.
But the two cases which clearly could use it are: the reloader
setup we've been discussing here; and the apply-new-version-and-restart
which I'm hoping to use in another setup at work.

Thanks for all the help and input on this, Oscar

TJG
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Dict comp help

2013-01-24 Thread Joseph L. Casale

Hi,
Slightly different take on an old problem, I have a list of dicts, I need to 
build one dict
from this based on two values from each dict in the list. Each of the dicts in 
the list have
similar key names, but values of course differ.


[{'a': 'xx', 'b': 'yy', 'c': 'zz'},  {'a': 'dd', 'b': 'ee', 'c': 'ff'}]


{ 'xx': 'zz', 'dd': 'ff'}


Anyone have insight on how to pull this off?


Thanks!
jlc



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Re: Dict comp help

2013-01-24 Thread Dave Angel


On 01/24/2013 03:58 PM, Joseph L. Casale wrote:

Hi,
Slightly different take on an old problem, I have a list of dicts, I need to 
build one dict
from this based on two values from each dict in the list. Each of the dicts in 
the list have
similar key names, but values of course differ.


[{'a': 'xx', 'b': 'yy', 'c': 'zz'},  {'a': 'dd', 'b': 'ee', 'c': 'ff'}]


{ 'xx': 'zz', 'dd': 'ff'}


Anyone have insight on how to pull this off?



Not till you tell us what the pattern is supposed to be.  I can see how 
you might want xx:dd, yy:ee, zz:ffbut have no idea what the intended 
connection is between the source dicts and the result.




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Re: Dict comp help

On 24 January 2013 20:58, Joseph L. Casale jcas...@activenetwerx.com wrote:
 Hi,
 Slightly different take on an old problem, I have a list of dicts, I need to 
 build one dict
 from this based on two values from each dict in the list. Each of the dicts 
 in the list have
 similar key names, but values of course differ.


 [{'a': 'xx', 'b': 'yy', 'c': 'zz'},  {'a': 'dd', 'b': 'ee', 'c': 'ff'}]


 { 'xx': 'zz', 'dd': 'ff'}


 Anyone have insight on how to pull this off?


Your specification is not exactly clear about how to handle all of the
different cases or what you really want but how about:

 l = [{'a': 'xx', 'b': 'yy', 'c': 'zz'}, {'a': 'dd', 'b': 'ee', 'c': 'ff'}]
 dict(d.values()[:2] for d in l)
{'xx': 'zz', 'dd': 'ff'}


Oscar
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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread llanitedave

On Thursday, January 24, 2013 7:54:55 AM UTC-8, rusi wrote:

 
 [I personally use emacs. It would be sadistic to make that into a
 
 recommendation]

Lol!  That's just too true.  It's also true for Eclipse, which I use very 
comfortably on Windows 7, but has proven to be a nightmare to set up on Ubuntu.

On Linux, I've tried several, but always keep coming back to Geany.
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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread Tetsuya


On 01/24/2013 04:51 PM, John Gordon wrote:

In ccf57220-4367-4611-b91b-5bf2a51e3...@googlegroups.com Sharwan Joram 
sharwan.jo...@gmail.com writes:


use vim.


He said he wanted autocomplete.  Does Vim have that?



Vim has everything, you just need a bunch of plugins.
I code mainly in python and django, and I use these plugins (among others):

powerline (status bar indicating git branch, etc..)
syntastic (support for pep8, flake8, pyflakes, etc..)
ctrlp (fuzzy search for filenames)
jedi (*awesome* python smart autocompletion)
tagbar (support for ctags, tags in a side window, jump around, etc)
fugitive (git with vim commands, very useful)
nerdcommenter (smart comment management)
nerdtree (filesystem management, tree of files, etc)
snipmate (snippets and autoexpanding of boilerplates)
gundo (undo management - vim has a smarter-than-others undo system)
supertab (autocomplete everything with TAB, smartly depending on 
language and context).


Is this enough? :-)
I can continue, but I think that, just to start, is enough. Vim wins.
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Re: Dict comp help

2013-01-24 Thread Peter Otten

Joseph L. Casale wrote:

 Slightly different take on an old problem, I have a list of dicts, I need
 to build one dict from this based on two values from each dict in the
 list. Each of the dicts in the list have similar key names, but values of
 course differ.
 
 
 [{'a': 'xx', 'b': 'yy', 'c': 'zz'},  {'a': 'dd', 'b': 'ee', 'c': 'ff'}]
 
 
 { 'xx': 'zz', 'dd': 'ff'}
 
 
 Anyone have insight on how to pull this off?

 data = [{'a': 'xx', 'b': 'yy', 'c': 'zz'},  {'a': 'dd', 'b': 'ee', 'c': 
'ff'}]
 {d[a]: d[c] for d in data}
{'xx': 'zz', 'dd': 'ff'}


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Re: The best, friendly and easy use Python Editor.

2013-01-24 Thread Kayode Odeyemi

Simply use Netbeans

On Thu, Jan 24, 2013 at 10:09 PM, llanitedave llanited...@veawb.coopwrote:

 On Thursday, January 24, 2013 7:54:55 AM UTC-8, rusi wrote:

 
  [I personally use emacs. It would be sadistic to make that into a
 
  recommendation]

 Lol!  That's just too true.  It's also true for Eclipse, which I use very
 comfortably on Windows 7, but has proven to be a nightmare to set up on
 Ubuntu.

 On Linux, I've tried several, but always keep coming back to Geany.
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http://ng.linkedin.com/in/kayodeodeyemi. t: @charyorde blog:
http://sinati.com/tree/java-cheat-sheet
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RE: Dict comp help

2013-01-24 Thread Leonard, Arah

 Hi,
 Slightly different take on an old problem, I have a list of dicts, I need to 
 build one dict from this based on two values from each dict in the list. Each 
 of the dicts in the list have similar key names, but values of course differ.
 
 
 [{'a': 'xx', 'b': 'yy', 'c': 'zz'},  {'a': 'dd', 'b': 'ee', 'c': 'ff'}]
 
 
 { 'xx': 'zz', 'dd': 'ff'}
 
 
 Anyone have insight on how to pull this off?
 
 
 Thanks!
 jlc
 

listy = [{'a':'xx', 'b':'yy', 'c':'zz'}, {'a':'dd', 'b':'ee','c':'ff'}]
kryten = {}
keys = []
for l in listy:
for key in l.keys():
if key not in keys: keys.append(key)
for key in keys:
kryten[key] = ''
for l in listy:
kryten[key] += l.has_key(key) and l[key] or ''
print kryten
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Re: Dict comp help

2013-01-24 Thread Rob Day

On 24 January 2013 21:11, Oscar Benjamin oscar.j.benja...@gmail.com wrote:
 l = [{'a': 'xx', 'b': 'yy', 'c': 'zz'}, {'a': 'dd', 'b': 'ee', 'c': 'ff'}]
 dict(d.values()[:2] for d in l)
 {'xx': 'zz', 'dd': 'ff'}

Python doesn't guarantee any ordering of items in a dictionary; {'a':
'xx', 'b': 'yy', 'c': 'zz'}.values()[:2] may not return ['xx', 'zz']
in different Python implementations or future versions (though it
seems to work consistently in CPython 2.7). See
http://docs.python.org/2/library/stdtypes.html#dict.items.

--
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robert@merton.oxon.org
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RE: Dict comp help

2013-01-24 Thread Joseph L. Casale

  data = [{'a': 'xx', 'b': 'yy', 'c': 'zz'},  {'a': 'dd', 'b': 'ee', 'c': 
  'ff'}] 
  {d[a]: d[c] for d in data}
 {'xx': 'zz', 'dd': 'ff'}


Priceless,
That is exactly what I needed, for which I certainly over complicated!


Thanks everyone!
jlc
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Re: The best, friendly and easy use Python Editor.

On Fri, Jan 25, 2013 at 7:25 AM, Tim Chase
python.l...@tim.thechases.com wrote:
 On 01/24/13 13:34, Leonard, Arah wrote:

 All true (especially the holy wars bit!). OP didn't (as far as
 I can see) even say which OS he is using. Anyway, my suggestion
 is generally that people use the editor with which they are
 already comfortable.


 Sound advice.  [snip] Whatever works is what works. It's just a
 text file after all.


 So even ed or edlin or even cat would do ;-)

Definitely. Especially if your edlin syntax highlights Python.

ChrisA
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Re: using split for a string : error

On 24 January 2013 11:35, Chris Angelico ros...@gmail.com wrote:

 It's usually fine to have int() complain about any non-numerics in the
 string, but I must confess, I do sometimes yearn for atoi() semantics:
 atoi(123asd) == 123, and atoi(qqq) == 0. I've not seen a
 convenient Python function for doing that. Usually it involves
 manually getting the digits off the front. All I want is to suppress
 the error on finding a non-digit. Oh well.


I'm interested to know what the situations are where you want the
behaviour of atoi().

Personally, I consider the int() function too permissive because of
its behaviour in truncating non-integer numeric types. But then that's
because I'm always paranoid that the values of my precious numbers are
being changed without my knowledge. From my vantage point I really
can't see why the ambiguous behaviour of atoi() would actually be
desired by anyone (unless they were stuck using a language that made
string manipulation generally a bit awkward).


Oscar
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Re: using split for a string : error

On Fri, Jan 25, 2013 at 11:20 AM, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
 Chris Angelico wrote:

 It's usually fine to have int() complain about any non-numerics in the
 string, but I must confess, I do sometimes yearn for atoi() semantics:
 atoi(123asd) == 123, and atoi(qqq) == 0. I've not seen a
 convenient Python function for doing that. Usually it involves
 manually getting the digits off the front. All I want is to suppress
 the error on finding a non-digit. Oh well.

 It's easy enough to write your own. All you need do is decide what you
 mean by suppress the error on finding a non-digit.

 Should atoi(123xyz456) return 123 or 123456?

 Should atoi(xyz123) return 0 or 123?

 And here's a good one:

 Should atoi(1OOl) return 1, 100, or 1001?

123, 0, and 1. That's standard atoi semantics.

 That last is a serious suggestion by the way. There are still many people
 who do not distinguish between 1 and l or 0 and O.

Sure. But I'm not trying to cater to people who get it wrong; that's a
job for a DWIM.

 def atoi(s):
 from unicodedata import digit
 i = 0
 for c in s:
 i *= 10
 i += digit(c, 0)
 return i

 Variations that stop on the first non-digit, instead of treating them as
 zero, are not much more difficult.

And yes, I'm fully aware that I can roll my own. Here's a shorter
version (ASCII digits only, feel free to expand to Unicode), not
necessarily better:

def atoi(s):
return int(0+s[:-len(s.lstrip(0123456789))])

It just seems silly that this should have to be done separately, when
it's really just a tweak to the usual string-to-int conversion: when
you come to a non-digit, take one of three options (throw error, skip,
or terminate).

Anyway, not a big deal.

ChrisA
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Re: using split for a string : error

On Fri, Jan 25, 2013 at 12:03 PM, Oscar Benjamin
oscar.j.benja...@gmail.com wrote:
 On 24 January 2013 11:35, Chris Angelico ros...@gmail.com wrote:

 It's usually fine to have int() complain about any non-numerics in the
 string, but I must confess, I do sometimes yearn for atoi() semantics:
 atoi(123asd) == 123, and atoi(qqq) == 0. I've not seen a
 convenient Python function for doing that. Usually it involves
 manually getting the digits off the front. All I want is to suppress
 the error on finding a non-digit. Oh well.


 I'm interested to know what the situations are where you want the
 behaviour of atoi().

It simplifies operations on strings that contain numbers. For
instance, here's a problem from yesterday. I have a set of files (MIDI
files of The Rose of Persia) which have been sloppily numbered:

Rose_1.mid
Rose_10.mid
Rose_11.mid
Rose_12.mid
Rose_13.mid
Rose_14.mid
Rose_15.mid
Rose_16.mid
Rose_17.mid
Rose_18.mid
Rose_19.mid
Rose_2.mid
Rose_20.mid
Rose_21.mid
Rose_22.mid
Rose_23.mid
Rose_24.mid
Rose_3.mid
Rose_4.mid
Rose_5.mid
Rose_6.mid
Rose_7.mid
Rose_8.mid
Rose_9.mid
Rose_Int.mid

They're not in order. The one marked Int is the Introduction and
should be first; then Rose_1 ... Rose_9, then Rose_10 ... Rose_24. In
fact, the correct sort order is exactly:

atoi(filename[5:])

Most of the time, it makes no difference. Python's int() will do
exactly what atoi() does. It's only in the unusual case where they
even differ.

ChrisA
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Re: using split for a string : error

On 25 January 2013 01:11, Chris Angelico ros...@gmail.com wrote:
 On Fri, Jan 25, 2013 at 12:03 PM, Oscar Benjamin
 oscar.j.benja...@gmail.com wrote:
 On 24 January 2013 11:35, Chris Angelico ros...@gmail.com wrote:

 It's usually fine to have int() complain about any non-numerics in the
 string, but I must confess, I do sometimes yearn for atoi() semantics:
 atoi(123asd) == 123, and atoi(qqq) == 0. I've not seen a
 convenient Python function for doing that. Usually it involves
 manually getting the digits off the front. All I want is to suppress
 the error on finding a non-digit. Oh well.


 I'm interested to know what the situations are where you want the
 behaviour of atoi().

 It simplifies operations on strings that contain numbers. For
 instance, here's a problem from yesterday. I have a set of files (MIDI
 files of The Rose of Persia) which have been sloppily numbered:

 Rose_1.mid
 Rose_10.mid
 Rose_11.mid
 Rose_12.mid
 Rose_13.mid
 Rose_14.mid
 Rose_15.mid
 Rose_16.mid
 Rose_17.mid
 Rose_18.mid
 Rose_19.mid
 Rose_2.mid
 Rose_20.mid
 Rose_21.mid
 Rose_22.mid
 Rose_23.mid
 Rose_24.mid
 Rose_3.mid
 Rose_4.mid
 Rose_5.mid
 Rose_6.mid
 Rose_7.mid
 Rose_8.mid
 Rose_9.mid
 Rose_Int.mid

 They're not in order. The one marked Int is the Introduction and
 should be first; then Rose_1 ... Rose_9, then Rose_10 ... Rose_24. In
 fact, the correct sort order is exactly:

 atoi(filename[5:])

I have solved similar situations with
sorted(filenames, key=lambda s: (len(s), s))
which is better than lexicographical ordering for sorting integer
strings. It gets the _Int file wrong in this case (but I consider it
luck that atoi does what you want for that file).


Oscar
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Need Pattern For Logging Into A Website

2013-01-24 Thread Tim Daneliuk


I need to write a Python script to do the following:

  - Connect to a URL and accept any certificate - self-signed or authoritative
  - Provide login name/password credentials
  - Fill in some presented fields
  - Hit a Submit button

Why?  Because I don't want to have to start a browser and do this
interactively every time I authenticate with a particular server.
I want to do this at the command line with no interactive intervention.

I know Python pretty well.  I don't quite know how to do this and
was hoping someone had a simple pattern they could share for
doing this.

TIA,
--

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PGP Key: http://www.tundraware.com/PGP/

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Re: using split for a string : error