On Dec 19, 1:46 am, "Frank Millman" wrote:
> "Steven D'Aprano" wrote in message
>
> news:4eeea8eb$0$11091$c3e8...@news.astraweb.com...
>
> > On Sun, 18 Dec 2011 18:35:47 -0800, alex23 wrote:
>
> >> Pre-namedtuple, I used to like using named slices for this:
>
> >> cPID = slice(19)
> >> pi
On Nov 30, 1:03 pm, Andrea Crotti wrote:
> Another thing about the AST, I am having fun trying to for example list
> out all
> the unused imports.
>
> I have already a visitor which works quite nicely I think, but now I
> would like
> to get a way to find all the unused imports, so I need more vis
On Nov 29, 3:04 am, Steven D'Aprano wrote:
> On Tue, 29 Nov 2011 12:49:49 +1100, Chris Angelico wrote:
> > On Tue, Nov 29, 2011 at 11:54 AM, DevPlayer wrote:
> >> To me, I would think the interpreter finding the coder's intended
> >> indent wouldn'
> I do not understand why the interpreter preprocesses each logical line
> of source code using something as simple as this:
correction:
I do not understand why the interpreter - does not- preprocess each
logical line
of source code using something as simple as this:
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On Nov 27, 6:55 pm, Steven D'Aprano wrote:
> On Sun, 27 Nov 2011 14:21:01 -0800, Travis Parks wrote:
> > Personally, I find a lot of good things in Python. I thinking tabs are
> > out-of-date. Even the MAKE community wishes that the need for tabs would
> > go away and many implementations have don
On Nov 15, 10:38 pm, goldtech wrote:
> Hi,
>
> Using Windows. Is there a python shell that has a history of typed in
> commands?
>
> I don't need output of commands just what I typed it. I need it to
> save between sessions - something that no shell seems to do. If I
> reboot there will still be a
This is an 'example string'
Don't for get to watch for things like:
Don't, Can't, Won't, I'll, He'll, Hor'davors, Mc'Kinly
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btw if you like processing text outside of python (say using grep or
something)
python -c "help('modules')" > all_imports.log
which you might note on windows get's processed to:
python -c "help('modules')" 1> all_imports.log
on windows from within a batch file
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Seems so far the common way to fully unload any import is to exit the
Python session.
Only if this is true do I offer this hackish idea:
Therefore you might wish to run an os script instead of a python
script right off.
Here is my hack at it... Something like this:
file myapp.bat
--
p
On Nov 20, 12:21 pm, Gelonida N wrote:
> I forgot to mention, that this is at the moment more a thought
> experiment, than a real need.
>
> At the moment I will do exactly what you suggested. I will make sure,
> that always the first import fails.
>
> But I wanted to learn more what is possible an
An alternative approach:
http://pastebin.com/z6pNqFYE
or:
# devpla...@gmail.com
# 2011-Nov-15
# recordimports.py
# my Import Hook Hack in response to:
#
http://groups.google.com/group/comp.lang.python/browse_thread/thread/5a5d5c724f142eb5?hl=en
# as an initial learning exercise
# This code ne
What I don't get is, having seen Python's syntax with indentation
instead of open and closing puncuation and other -readability-
structures in Python's syntax, is if someone is going to invent any
new language, how could they NOT take Python's visual structures (read
as readability) and copy it, wh
On Oct 16, 12:05 am, Steven D'Aprano wrote:
> On Sat, 15 Oct 2011 15:04:24 -0700, DevPlayer wrote:
> > I thought "x not in y" was later added as syntax sugar for "not x in y"
> > meaning they used the same set of tokens. (Too lazy to check the actual
> &
On Oct 31, 8:01 am, dhyams wrote:
> Thanks for all of the responses; everyone was exactly correct, and
> obeying the binding rules for special methods did work in the example
> above. Unfortunately, I only have read-only access to the class
> itself (it was a VTK class wrapped with SWIG), so I ha
When visitors visit your site to post their code; often such posts ask
for username and email address; consider adding additional fields to
generate some Python documenting feature like Sphinx or epydoc.
and let your site inject the docstring (module string) into the
snippet; primarily, author, u
On Oct 31, 10:00 am, Andrea Crotti wrote:
> Suppose that I have a project which (should be)/is multiplatform in python,
> which, however, uses some executables as black-boxes.
>
> These executables are platform-dependent and at the moment they're just
> thrown inside the same egg, and using pkg_re
To be honest, I was hoping someone would have posted a link to a well
known and tested recipe. You'd think this function would be in the
standard library or a specific Exception tied directly with setattr()
and getattr() (and possibly __getattr__(), __getattribute__(),
__setattr__())
The main thin
Second error
def isvalid_named_reference( astring ):
# "varible name" is really a named_reference
import __builtin__# add line
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At least one error:
change:
> for astr in dir(__builtins__):
to:
for astr in __builtins__.__dict__:
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Personally I like to use this function instead of a "try: except:"
because try-except will allow names like __metaclass__.
Remember, setattr(obj, attr_name, value) allows attr_name to be any
valid str().
For example: '!@kdafk11', or '1_1', '1e-20', '0.0', '*one', '\n%%',
etc.
def isvalid_named_re
On Oct 27, 3:59 pm, Andy Dingley wrote:
> I have some XML, with a variable and somewhat unknown structure. I'd
> like to encapsulate this in a Python class and expose the text of the
> elements within as properties.
>
> How can I dynamically generate properties (or methods) and add them to
> my cl
On Oct 17, 10:34 am, Steven D'Aprano wrote:
> On Mon, 17 Oct 2011 05:59:04 -0700, DevPlayer wrote:
> > As has been said for example does 1+1 = 2. Only in one small
> > persepective. Whaa? what wack job says stuff like that? 1+1 = 10. In the
> > bigger picture there is m
> DevPlayer wrote:
> >I still assert that contradiction is caused by narrow perspective.
> >By that I mean: just because an objects scope may not see a certain
> >condition, doesn't mean that condition is non-existant.
> Groetjes Albert wrote:
> This is a far
On Oct 8, 8:41 am, Alain Ketterlin
wrote:
> candide writes:
> > Python provides
>
> > -- the not operator, meaning logical negation
> > -- the in operator, meaning membership
>
> > On the other hand, Python provides the not in operator meaning
> > non-membership. However, it seems we can
On Oct 15, 2:20 am, aaabb...@hotmail.com wrote:
> Test.py
> ---
> #!/usr/bin/python
>
> from my_lib import my_function
>
> class MyClass(my_function): # usually class names start capital
>
> """We know you're not forgetting to document."""
>
> def __init__(self, name):
> sup
On Oct 14, 7:46 pm, Ian Kelly wrote:
> On Fri, Oct 14, 2011 at 5:36 PM, Troy S wrote:
> (Python 3)
> date_range = {d:v for d, v in source_dict.items() if '20110809' <= d
> <= '20110911'}
> Ian- Hide quoted text -
> - Show quoted text -
(Python 2.7) supports dictionary comprehensions. I prehaps a
I still assert that contradiction is caused by narrow perspective.
By that I mean: just because an objects scope may not see a certain
condition, doesn't mean that condition is non-existant.
I also propose that just because something seems to contradict doesn't
mean it is false. Take for instance
from attitude import humour
Funny. url link to gif. Funny. Youtube video. Funny.
True Pythonees do not speak in English they speak in Python.
Shame, this discussion will be sent to the Pearly gates or the Flaming
Iron Bars in 5 days. Well, not so much a shame.
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Oh I was just testing my intellecual-enlightenment-from-ranter-
conversation algorithm found in a previous post. I think my OOP model
failed as I'm just too tired to finished that pattern test. He had
some good points which fit the process I layed out. But the original
topic is just so much better:
On Sep 27, 10:25 pm, alex23 wrote:
> rantingrick wrote:
> > Since, like the bible
> > the zen is self contradicting, any argument utilizing the zen can be
> > defeated utilizing the zen.
>
> And like the Bible, the Zen was created by humans as a joke. If you're
> taking it too seriously, that's y
By the way OP Passiday the title of the topic is "Suggested coding
style".
Are you suggesting a coding style or asking for a Python coding style
or are you asking what IS the Python coding style.
If you are asking what is the Python coding style. Google The Zen of
Python. It's pretty much the dic
On Sep 25, 11:41 pm, Chris Angelico wrote:
> On Mon, Sep 26, 2011 at 12:59 PM, Tim Johnson wrote:
> > BTW: If you like ranting as a spectator sport, I have found the
> > Common Lisp newsgroup to be among the most spectacular. But that's
> > just me.
>
> I do, actually, but I don't need to add a
Ah. out of my depth.
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tuple([ (tuple(lst[x-1:x+1]) if len(tuple(lst[x-1:x+1]))==2 else
lst[x-1]) for x in lst[::2]])
((1, 2), (3, 4), 5)
# or
x = ((tuple(lst[x-1:x+1]) if len(tuple(lst[x-1:x+1]))==2 else
lst[x-1]) for x in lst[::2])
x.next()
(1, 2)
x.next()
(3, 4)
x.next()
5
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def maketup(lst):
if len(lst) == 1:
return lst[0]
elif len(lst) == 2:
return (lst[0],lst[1])
elif len(lst) > 2:
return ( (maketup(lst[:-2]), lst[-2]), lst[-1])
maketup(lst)
1, 2), 3), 4), 5)
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lst = [1, 2, 3, 4, 5]
def maketup(lst):
cur_item = lst[-1]
lst = lst[:-1]
if len(lst):
return maketup(lst), cur_item
else:
return cur_item
print maketup(lst)
1, 2), 3), 4), 5)
But I'm confused as to what you mean by :
> Among them, I want to pair up terminals
looping = True
while looping:
guess = int(raw_input("Take a guess: "))
tries += 1
if guess > the_number:
print "Lower..."
elif guess < the_number:
print "Higher..."
else:
print "You guessed it! The number was", the_number
print "And it only took y
On Jan 4, 11:46 pm, Inyeol wrote:
> Which coding style do you prefer? I'm more toward public API way,
> since it requires less code change if I refactor private data
> structure later.
> Plz give pros and cons of these.
Great question. It gets at the heart of Python style.
It's a tricky question
The shorter version:
This doesn't need any x = iter(list) line. perhaps more useful if you
have a bunch of lists to be converted through out your code.
def dictit(lyst):
i = 0
while i < len(lyst):
yield lyst[i], lyst[i+1]
i = i + 2
l = [1, 2, 3, 4, 5, 6, 7, 'a', 8, 'b']
{
Here is something totally the opposite of a nice one liner:
A hackish module with a bloated generator. Feel free to comment, so I
can learn the errors of my ways. Try not to be too mean though. Try to
think of the attached file as a demonstration of ideas instead of good
coding practices.
Don't b
See section titled: "'array' or 'matrix'? Which should I use?"
at
http://www.scipy.org/NumPy_for_Matlab_Users
BTW
http://www.python.org/dev/peps/pep-0211/
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BTW
http://www.python.org/dev/peps/pep-0211/
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I would be very suprised if you achieve faster results threading this
problem. There's been much discussed on benefits or lack thereof to
threading in Python (or in general).
Threading is best used in situations where you are doing different
kinds of tasks. For example if you want to do your matri
Awesome, thanks so much for you efforts and sharing.
Idea:
It would be great if we put this table into a python program where I
can run a script against this table and a Python source code module
(file) so that it would spit out a list of strings showing what python
versions work with said source
or only convert the item when you need it leaving the lists as the
source
lyst = [1, 2, 3, 4, 5, 6, 7, 'a', 8, 'b']
func = lambda alist, index: dict([(lyst[index*2],
lyst[(index*2)+1]),])
func(lyst, 0)
{1: 2}
func(lyst, 2)
{5: 6}
##
or as a function
def func(lyst, index):
An adaptation to Hrvoje Niksic's recipe
Use a dictionary comprehention instead of a list comprehension or
function call:
lyst = [1, 2, 3, 4, 5, 6, 7, 'a', 8, 'b']
it = iter( lyst )
dyct = {i:it.next() for i in it} # I'm using {} and not [] for those
with tiny fonts.
#print dyct
{8: 'b', 1: 2,
Mere are my ramblings of a novice (bad) Hobbyst programmer.
You mentioned that your having a hard time coming up with a solution
to your complex problem. Complex means you are doing lots of different
things to different things all over the place where timing is an
issue.
First it seems you are t
I agree with you Steven that the OP should avoid __getattribute__ and
the like for many a thing. I also agree with your last statement. I
try to answer the OP's question without much "You shouldn't do this's
and don't do that's". I trust them to make thier own decisions. I'd
say "A much better solu
There's some_object.some_method.func_defaults and
some_function.func_defaults both are a settable attribute. How to set
the methods func_defaults? You'd have to have code in
_getattribute__(yourmethod) if not __getattr__(yourmethod)
def __getattribute__(self, attr):
if attr == self.my_method:
# dynamic_named_obj.py
# comp.lang.python
# 2010-12 Dec-28
# Topic: Dynamic list name from a string Options
# attempts to answer OP's question
# DevPlayer - not a solution I'd use
# TO Original Poster OP:
# Start from the bottom OPTION, the one you requested.
# Work your way up and
# parse_url11.py
# devpla...@gmail.com
# 2010-12 (Dec)-27
# A brute force ugly hack from a novice programmer.
# You're welcome to use the code, clean it up, make positive
suggestions
# for improvement.
"""
Parse a url string into a list using a generator.
"""
#special_itemMeaning = ";?:@=&#."
> Original Poster
> I thought I'd implement it as a subclass of collections.OrderedDict
> that prohibits all modifications to the dictionary after it has
> been initialized.
I thought the __new__() method was for customizing how objects where
instantated. Where in __new__() you would get an object
Snapshot in time, hey look at that; someone used Python as THE example
of what a programming language is on Wikipedia.
http://en.wikipedia.org/wiki/Programming_language
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Shouldn't
return 'xx'
be
return self['xx'
I don't know why precisely you're using a class as a global namespace,
not that I personally find fault with it. But here are some other
things you can do.
Idea one:
==
class NS(object): """plac
Shouldn't
return 'xx'
be
return self['xx']
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Couple of things:
I don't think this is what you want:
def __getitem__(self, key):
import __builtin__
if key == 'xx':
return 'xx'
I won't return a KeyError for any string you give g[]
It will return 'xx' only if you supply key='xx' and ignore every other
key=???
Wit
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