the code and isn't recompiled unless the source code
changes).
The default parameters are actually evaluated when the 'def' statement is
executed and the function object is created from the default arguments and
the previously compiled code block.
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in the B was ever expandable.
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an introduction to using Idle on the Raspberry Pi at
http://www.raspberrypi.org/documentation/usage/python/
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as there is
no need to
specify any namespaces.
exec def __new__(_cls, %(argtxt)s):
return tuple.__new__(_cls, (%(argtxt)s)) % { 'argtxt': argtxt }
also passes the tests.
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Azure.
Extensive support for Django (including Intellisense and debugging for
templates and various Django specific commands such as sync db and admin
shell).
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Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote:
Duncan Booth wrote:
Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote:
Unfortunately, software development on Windows is something of a
ghetto, compared to the wide range of free tools available for
Linux.
I
Peter Otten __pete...@web.de wrote:
Duncan Booth wrote:
Chris Angelico ros...@gmail.com wrote:
On Sat, May 31, 2014 at 7:42 AM, Devin Jeanpierre
jeanpierr...@gmail.com wrote:
In unix shells you can literally use a new line. Or is that only
bash?
You can in bash, I know, but it's
import
^
SyntaxError: invalid syntax
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as a
single unit for easy editing:
PS C:\python33 python -c @
import os
for root, dirs, files in os.walk('.'):
if len(dirs + files) == 1: print(root)
@
.\Doc
.\Lib\concurrent\__pycache__
.\Lib\curses\__pycache__
... and so on ...
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):
Author: Lev Shamardin
Author-email: shamar...@gmail.com
License: BSD
Still better to get in touch with the author, but he has actually stated
the license albeit in the most minimal way possible.
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, IronPython, editing, browsing, Intellisense,
mixed Python/C++ debugging, remote linux/MacOS debugging, profiling,
IPython, Django, and cloud computing with client libraries for
Windows, Linux and MacOS.
Designed, developed, and supported by Microsoft and the community.
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Duncan Booth duncan.booth@invalid.invalid wrote:
Sameer Rathoud sameer.rath...@gmail.com wrote:
On Wednesday, May 28, 2014 5:16:41 PM UTC+5:30, Greg Schroeder wrote:
Please suggest, if we have any free ide for python development.
Anything that writes text is fine.
I recommend
string needs I think at least 45 bytes (64 bit Python
2.x, up to double that in Python 3.x) but the list only needs one 8 byte
pointer per key.
I would always choose this simple solution until such time as it is proved
to be a problem.
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subclass
which doesn't include a `__slots__` attribute to get a class that can
accept arbitrary attributes.
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are the same object?
If I say:
a = (spam, [10, 30], eggs)
then
a[0] = a[0]
won't actually mutate the object. So tuples could let that silently pass.
Then you would be able to safely do:
a[1] += [50]
but this would still throw an exception:
a[0] += x
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-length novels,
creating a set from a dict doesn't duplicate any strings.
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/i python-3.4.0rc1.amd64.msi /L*v logfile.txt
Does it put any useful messages in logfile.txt?
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Cat Photos
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($args
-replace'(\\*)','$1$1\') }
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as it will
only break for the expected terminal False, not for 0, , or None.
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Gregory Ewing greg.ew...@canterbury.ac.nz wrote:
rusi wrote:
Good idea. Only you were beaten to it by about 2 decades.
More than 2, I think.
Algol: x := y
Wher := is pronounced 'becomes'.
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in_sequence(H) :
while H:
yield heappop(H)
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to x are not
divisible by a, b, or c, which would be a case of re-using some of the
above code.
For extra credit, calculate and use the least common multiple of a,b and c
instead of just using their product.
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of
BaseException) are permitted. This means the structure can be as deeply
nested as you wish, but can never be recursive and no checks against
recursion need to be implemented.
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.)
For those of us that don't really want to join another mailing list, could
you summarise what change is being proposed?
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.
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Neil Cerutti ne...@norwich.edu wrote:
On 2013-10-03, Duncan Booth duncan.booth@invalid.invalid wrote:
It isn't hard to imagine adding a TAIL_CALL opcode to the
interpreter that checks whether the function to be called is
the same as the current function and if it is just updates the
arguments
.
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would lose stack frames in any traceback. Also
it means code for this modified Python wouldn't run on other non-modified
interpreters, but it is at least theoretically possible without breaking
Python's assumptions.
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it works on a tablet but it would be worth
trying.
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Roy Smith r...@panix.com wrote:
http://xkcd.com/1263/
So now I guess someone has to actually implement the script. At least,
that's (sort of) what happened for xkcd 353 so there's a precedent.
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C in a Pascalish,
Algol68ish
style (if I remembered them correctly):
#define IF if(((
#define AND ))((
#define OR )||(
#define THEN ))){
#define ELSE }else{
#define FI }
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as the version I
remember as it doesn't 'fix' the logical operator priorities.
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way of writing it is
more readable.
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through.
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Chris Angelico ros...@gmail.com wrote:
On Tue, Jul 23, 2013 at 6:06 PM, Duncan Booth
duncan.booth@invalid.invalid wrote:
I have a very common situation where an overly strict SPF may cause
problems:
Like many people I have multiple email addresses which all end up in
the same inbox. The one
that you need _handle_bool as both a static method
and a utility function, you probably also need to explain why you can't
just use both:
class Parser:
def _handle_bool(input): ...
handle_bool = staticmethod(_handle_bool)
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--
http
.
Or as the source puts it: it's a mix between Boyer-Moore and Horspool, with
a few more bells and whistles on the top.
Also the regex library has to do a whole lot more than just figuring out if
it got a match, so you have massively over-simplified it.
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--
http
and objects that require cleanup were pushed onto that stack
after being fully constructed but before calling the initialisation that
required cleanup. See
http://www.developer.nokia.com/Community/Wiki/Two-phase_construction
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don't need to call the `iterkeys()` method as you need them all to
sort and just treating the dict as a sequence will do the right thing.
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, just be sure to set the correct locale
first:
import locale
locale.setlocale(locale.LC_ALL, '')
'English_United Kingdom.1252'
locale.atoi('1,000')
1000
locale.atof('1,000')
1000.0
locale.setlocale(locale.LC_ALL, 'French_France')
'French_France.1252'
locale.atof('1,000')
1.0
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')
if should_be_on - EARLY_DELTA = came_on = should_be_on + LATE_DELTA:
return 'on time'
if came_on should_be_on:
return 'delayed'
return 'early'
Note that none of this will hande situations around midnight such as:
should_be_on==23.5, came_on=0.5
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'
a contains unicode MICRO SIGN, b contains GREEK SMALL LETTER MU
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that (in most cases)
runs faster than the original, which is pretty much the same thing. All it
needs is a bit of AI stuck on to critique the code and complain about the
weather and you're done.
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the
latter.
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Steve Simmons square.st...@gmail.com wrote:
On 22/02/2013 15:26, Duncan Booth wrote:
Rui Maciel rui.mac...@gmail.com wrote:
Chris Angelico wrote:
On Fri, Feb 22, 2013 at 10:58 PM, Rui Maciel rui.mac...@gmail.com
wrote:
Mitya Sirenef wrote:
Looks very unclear and confusing to me
}
You can't just allow ':' to generate slice objects everwhere without
introducing ambiguity, so your proposal would have to be to allow slice
objects in wider but still restricted contexts.
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loop in
Python but use callbacks from the library to handle the values as they
appear, but again that probably just complicates things.
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(nto the script) will have been compiled once and don't compile
again until the source changes.
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, browser, date, page, host))
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#break-and-continue-statements-and-else-clauses-on-loops
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Duncan Booth duncan.booth@invalid.invalid wrote:
Matching 'if' or 'for' or 'while'.
or of course 'try'.
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://docs.python.org/2/library/ctypes.html#return-types
You can also tell it what parameter types to expect which will make calling
it simpler.
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=prog, l=l, tc=tc)
if hasattr(prog, 'VERSION'):
print 'But I challenge them to write code {tc.way} clean
without it!'.format(**locals())
if __name__ == '__main__':
main()
-
--
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chaouche yacine yacinechaou...@yahoo.com wrote:
booleans
ints, floats, longs, complexes
strings, unicode strings
lists, tuples, dictionaries, dictionary views, sets, frozensets,
buffers, bytearrays, slices functions, methods, code
objects,modules,classes, instances, types, nulls (there is
Chris Angelico ros...@gmail.com wrote:
On Sun, Dec 23, 2012 at 6:28 PM, Tim Roberts t...@probo.com wrote:
Duncan Booth duncan.booth@invalid.invalid wrote:
In this year's Christmas Raffle at work I won a 'party-in-a-box'
including USB fairy lights.
They sit boringly on all the time, so does
In this year's Christmas Raffle at work I won a 'party-in-a-box' including
USB fairy lights.
They sit boringly on all the time, so does anyone know if I can toggle the
power easily from a script? My work PC is running Win7.
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you feel the need for an empty
function.
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and readable, which one is more pythonic ?
The one that doesn't do unexpected things with operators.
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):
raise RuntimeError(Failed to get computer name)
return buf.value[:len.value]
print GetComputerName()
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to the next
multiple of 8 spaces.
if 1:
... print yes # space + tab
... print no # eight spaces
...
yes
no
If tab expanded to exactly 8 spaces the leading space would have forced an
indentation error, but it didn't.
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--
http
accept
any old server regardless what certificate it uses, but be aware that
this impacts security.
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then connect to it using the external hostname rather than
localhost).
Or just use http:// configured to allow access through localhost only.
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from the lockscreen
until you get to a page with only a '+', add the new widget there, then
long press that widget and drag it to be the rightmost page.
Then you should be sorted just so long as you don't have any friends with
December birthdays.
--
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checking types at all?
def foo(file_or_string):
try:
data = file_or_string.read()
except AttributeError:
data = file_or_string
... use data ...
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'functional' version there is also the Python 3.3 variant:
def options(heaps):
if not heaps: return []
head, *tail = heaps
yield from ([h]+tail for h in range(head))
yield from ([head]+t for t in options(tail))
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+02')
What do you get printing the value on 2.6 with a '%.20e' format? I seem to
remember that 2.7 rewrote float parsing because previously it was buggy.
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under 'built-in functions'.
http://docs.python.org/library/functions.html#help
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don't
remembers. I do not see anything on PyPI. Any advice is welcome!
Not exactly what you asked for, but if you clone
https://github.com/collective/buildout.python then a single command will
build Python 2.4, 2.5, 2.6, 2.7, 3.2, and 3.3 on your system.
--
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]
return [1, 2]
else:
def function():
function()
[1, 2, 3]
return [1, 2, 3]
and if it's more than one such function use separate modules.
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Mark Lawrence breamore...@yahoo.co.uk wrote:
On 19/10/2012 09:56, Duncan Booth wrote:
Mark Lawrence breamore...@yahoo.co.uk wrote:
Good morning/afternoon/evening all,
Where is this specific usage documented as my search engine skills have
let me down? By this I mean entering help
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than following a grammar (_parse is a 238 line
function). So I think it really is just trying to match existing regular
expression parsers and any possible grammar is an excuse for why it should
be the way it is rather than an explanation.
--
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--
http
', 1, 'insertme', 2, 'insertme', 3]
I appreciate any and all feedback.
Given the myriad of proposed solutions, I'm surprised nobody has suggested
good old list slicing:
x = [1,2,3]
y = ['insertme']*(2*len(x))
y[1::2] = x
y
['insertme', 1, 'insertme', 2, 'insertme', 3]
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or
special sequences.
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where id =
:barId
then you would need a parameter map with a single key-value pair, barId=123.
That's a great place to use singletonMap()
Of course in Python you just use a dict literal in that case so it's pointless.
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the triple-quote
string containing the CMD commands, just begin the file with a goto to
skip into the batch commands and end them by jumping to eof.
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on startup so instead of a default of `timeout=
15` you would have a default `timeout=MEDIUM_TIMEOUT` or whatever name
is appropriate.
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has been about how, for random strings, the not-equal case
is O(1) as well.
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the
code doesn't attempt to short circuit the not equal but interned case.
The comparison code doesn't look at interning at all, it only looks for
identity as a shortcut.
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of
comparisons on the same string (otherwise creating the string would be the
limiting factor), so at the expense of a single dictionary insertion when
the string is created you can get guaranteed O(1) on all the comparisons.
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are comitted (or aborted). This means that global objects can
be safely read from multiple threads without any semaphore locking.
See http://mail.python.org/pipermail/pypy-dev/2012-September/010513.html
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what's going on in more detail.
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68 which if I remember correctly used :=
for assignment and = to bind names (although unlike Python you couldn't
then re-bind the name to another object in the same scope).
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the database once and then write
out your status every few seconds.
import sqlite3
con = sqlite3.connect('status.db')
...
with con:
cur = con.cursor()
cur.execute('UPDATE ...', ...)
and similar code to restore the status or create required tables on
startup.
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that is a
safe assumption.
I believe so.
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to itself you've broken the rules for reference counting.
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= list(vertical_neighbours(coords))
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case I still need to
sign up to the list to post but definitely don't want to receive emails.
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Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote:
JSON expects double-quote marks, not single:
v = json.loads({'test':'test'}) fails
v = json.loads('{test:test}') succeeds
You mean JSON expects a string with valid JSON?
Quelle surprise.
--
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to one in compactness, what a magic 3!
You can avoid the duplication fairly easily:
name='Peter'
'Are you {name}?'.format(**vars())
'Are you Peter?'
though if you're doing that it would be better to limit the scope to a
specific namespace.
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--
http
to conditionally acquire the
lock and return a boolean indicating success or failure. When used inside a
`with` statement you can't pass in the optional argument so it acquires it
unconditionally but still returns the success status which is either True
or it never returns.
--
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editors or indeed humans) to understand.
A little bit of redundancy in the grammar is seen as a good way to minimise
errors.
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about that.
Also the what's new doesn't mention PEP 414 although the release page does.
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++ which is nothing at all like
Notepad.
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types and never having converted my code to C I have no idea whether or not
the performance for the intended case would be competitive with the builtin
sum though I don't see why it wouldn't be.
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://nedbatchelder.com/blog/200804/the_structure_of_pyc_files.html for
some code that shows you what's in a .pyc
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: oops
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Rick Johnson rantingrickjohn...@gmail.com wrote:
On Feb 14, 5:31 am, Duncan Booth duncan.bo...@invalid.invalid wrote:
Rick Johnson rantingrickjohn...@gmail.com wrote:
BS! With free healthcare, those who would have allowed their immune
system fight off the flu, now take off from work, visit
Arnaud Delobelle arno...@gmail.com wrote:
On 15 February 2012 09:47, Duncan Booth duncan.booth@invalid.invalid
wrote:
Rick Johnson rantingrickjohn...@gmail.com wrote:
[...]
Perhaps it's a bit presumptuous of me but...
It's tempting to react to his inflammatory posts, but after all Rick
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