On Fri, Jun 3, 2011 at 2:35 PM, Joe wrote:
> foo.__dict__['color']='blue'
> fu.__dict__['color']='red'
You don't need to use __dict__ to set function attributes. Just do:
foo.color = 'blue'
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On Mon, Jun 6, 2011 at 9:29 AM, Steven D'Aprano
wrote:
> [...]
>> I would expect
>> any regex processor to compile the regex into an FSM.
>
> Flying Spaghetti Monster?
>
> I have been Touched by His Noodly Appendage!!!
Finite State Machine.
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On Mon, Jun 6, 2011 at 10:08 AM, Neil Cerutti wrote:
> import re
>
> print("re solution")
> with open("data.txt") as f:
> for line in f:
> fixed = re.sub(r"(TABLE='\S+)\s+'", r"\1'", line)
> print(fixed, end='')
>
> print("non-re solution")
> with open("data.txt") as f:
> for l
The main thing I wanted to fix was that the second .index() call had
the possibility of raising an unhandled ValueError. There are really
two things we have to search for in the line, either of which could be
missing, and catching them both with the same except: clause feels
better to
On Mon, Jun 6, 2011 at 11:48 AM, Ethan Furman wrote:
> I like the readability of this version, but isn't generating an exception on
> every other line going to kill performance?
I timed it on the example data before I posted and found that it was
still 10 times as fast as the regex version. I di
DDING
> EncodeAES = lambda c, s: base64.b64encode(c.encrypt(pad(s)))
> DecodeAES = lambda c, e:
> c.decrypt(base64.b64decode(e)).rstrip(PADDING)
Stylistic note: is it really necessary to use lambda here? For
readability, just use def. It's worth having to hit Enter a couple
ext
On Mon, Jun 6, 2011 at 6:11 PM, Ben Finney wrote:
>> You must use prefix-** in the call to unpack the mapping as keyword
>> arguments. Note that using locals() like this isn't best-practice.
>
> Who says so, and do you find their argument convincing? Do you have a
> reference for that so we can se
I can see the appeal, but I tend to avoid it because it has
the same icky feeling as doing an import *.
Cheers,
Ian
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On Tue, Jun 7, 2011 at 1:31 PM, Dun Peal wrote:
> On Jun 7, 1:23 pm, Neil Cerutti wrote:
>> Use pdb.
>
> Neil, thanks for the tip; `pdb` is indeed a great debugging tool.
>
> Still, it doesn't obviate the need for arguments in the stack trace.
Your program could use sys.excepthook to generate a
assignment) atomic to make
this concurrent.
Cheers,
Ian
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On Tue, Jun 7, 2011 at 2:22 PM, Ian Kelly wrote:
> from functools import partial
>
> def g(value):
> print(value)
> return partial(g, value+1)
>
> f = partial(0)
> for i in range(1):
> f = f()
The "partial(0)" should read "partial(g,
On Tue, Jun 7, 2011 at 2:42 PM, Paul Rubin wrote:
> geremy condra writes:
>> # adds random junk to the filename- should make it hard to guess
>> rrr = os.urandom(16)
>> fname += base64.b64encode(rrr)
>
> Don't use b64 output in a filename -- it can have slashes in it! :-(
>
> Simplest is to use
2011/6/10 Sérgio Monteiro Basto :
> ok after thinking about this, this problem exist because Python want be
> smart with ttys, which is in my point of view is wrong, should not encode to
> utf-8, because tty is in utf-8. Python should always encode to the same
> thing. If the default is ascii, shou
descriptor that can be
inherited (thanks to the metaclass), can be accessed from either the
class or the instance (thanks to the descriptor), and can easily be
modified to generate the doc string dynamically at call-time if
desired.
Cheers,
Ian
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t;)
RuntimeError: generator didn't stop
So as far as I can tell, generator-based context managers simply can't
be used as ContextDecorators. Furthermore, the documentation's claim
that they can is actually harmful, since they *appear* to work at
first. Or am I simply missing something here?
Cheers,
Ian
[1]
http://docs.python.org/py3k/library/contextlib.html#contextlib.ContextDecorator
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On Fri, Jun 10, 2011 at 4:57 PM, Ian Kelly wrote:
> So as far as I can tell, generator-based context managers simply can't
> be used as ContextDecorators. Furthermore, the documentation's claim
> that they can is actually harmful, since they *appear* to work at
> first.
ing like
this:
deprecated_default = deprecated()
@deprecated_default
def foo():
return 0
But this hardly seems worthwhile to me just to avoid typing an extra
couple of parentheses.
Cheers,
Ian
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such as
ints, this doesn't matter. For mutable objects such as lists, it can:
>>> class X(object):
... pass
...
>>> a = X()
>>> b = X()
>>> a.foo = ['apples']
>>> b.__dict__.update(a.__dict__)
>>> a.foo
['apples']
= actor
...
>>> a = Action(Actor(World()))
>>> b = deepcopy(a)
>>> a.actor is b.actor
False
>>> a.actor.world is b.actor.world
False
The intention here is probably that a and b should both be part of the
same World, but as you can see that is not the case; the World got
copied along with everything else. Python provides machinery to let
you avoid deep copying absolutely everything, but it's important to be
aware of cases like this.
Cheers,
Ian
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On Tue, Jun 14, 2011 at 12:11 AM, Xah Lee wrote:
> numerical keypad is useful to many. Most people can't touch type. Even
> for touch typist, many doesn't do the number keys. So, when they need
> to type credit, phone number, etc, they go for the number pad.
It's not about being *able* to touch t
est("HEAD", "/", "HTTP 1.0")
>>>> r = h.getresponse()
>>>> r.read()
> b''
You mean why does it return an empty byte sequence? Because the HEAD
method only requests the response headers, not the body, so the body
is empty. If you want to see the response body, use GET.
Cheers,
Ian
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On Tue, Jun 14, 2011 at 4:57 PM, MRAB wrote:
> To me, the obvious choice would be "return", not "break".
No, "return" returns a value. Modules do not return values.
Therefore "return" would be inappropriate. If this feature were
deemed desirable, "break" would make more sense to me.
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http://
On Thu, Jun 16, 2011 at 7:21 PM, Erik Max Francis wrote:
>> This would, if I understand imports correctly, have ham() operate in
>> one namespace and spam() in another. Depending on what's being done,
>> that could be quite harmless, or it could be annoying (no sharing
>> module-level constants, e
On Thu, Jun 16, 2011 at 10:24 PM, Erik Max Francis wrote:
> True. So let's use `in` to represent breaking out of the top-level code of
> a module. Why not, it's not the first time a keyword has been reused,
> right?
>
> The point is, if it's not obvious already from that facetious proposal, it's
On Thu, Jun 16, 2011 at 10:21 PM, Erik Max Francis wrote:
> Ethan Furman wrote:
>>
>> The Context:
>>
>> "It's quite consistent on which control structures you can break out of"
>>
>> Hmmm Nope, nothing there to suggest you were talking about the 'break'
>> keyword.
>
> That's what I wrote, al
On Fri, Jun 17, 2011 at 4:27 AM, bruno.desthuilli...@gmail.com
wrote:
> On Jun 11, 10:28 pm, Ian Kelly wrote:
>>
>> Since there is no way to distinguish the two cases by the arguments,
>
> def deprecated(func=None, replacement=None):
> if replacement:
>
On Fri, Jun 17, 2011 at 8:45 AM, Franck Ditter wrote:
> Hi, I'm just wondering about the complexity of some Python operations
> to mimic Lisp car and cdr in Python...
>
> def length(L) :
> if not L : return 0
> return 1 + length(L[1:])
>
> Should I think of the slice L[1:] as (cdr L) ? I mean, i
On Fri, Jun 17, 2011 at 10:56 AM, Wolfgang Rohdewald
wrote:
> On Freitag 17 Juni 2011, Steven D'Aprano wrote:
>> run this one-
>> liner and wonder no more...
>
> looks like something dangerous to me. What does
> it do? rm -rf ?
The thread at the link discusses what it does in great detail.
--
ht
On Fri, Jun 17, 2011 at 3:02 PM, Shashank Singh
wrote:
> Correct me if I am wrong here but isn't the second one is O(log N)?
> Binary search?
> That is when you have an already sorted list from somewhere and you
> are inserting just one new value.
Finding the position to insert is O(log n), but t
On Fri, Jun 17, 2011 at 3:48 PM, Chris Torek wrote:
> If len(large_list) is m, this is O(m). Inserting each item in
> the "right place" would be O(m log (n + m)). But we still
> have to sort:
>
> a.sort()
>
> This is O(log (n + m)), hence likely better than repeatedly inserting
> in the corre
='high') --
or maybe just HighElf(), which inherits from Elf). Save inheritance
for broad categories of what it means to be a character (e.g.
PlayerCharacter vs. NonPlayerCharacter or MobileCharacter vs.
MagicMirror, etc., any of which might have the Wizard character
class).
Cheers,
Ian
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On Mon, Jun 20, 2011 at 5:57 AM, Mel wrote:
> Battle for Wesnoth is set up this way. I don't know what the code does, but
> you can go wild creating new classes of character by mixing up new
> combinations of attribute settings in new configuration files, and injecting
> them into the standard ga
On Mon, Jun 20, 2011 at 12:14 PM, Tim Johnson wrote:
> Currently using python 2.6, but am serving some systems that have
> older versions of python (no earlier than.
> Question 1:
> With what version of python was str.format() first implemented?
2.6
> Question 2:
> Given the following string:
On Mon, Jun 20, 2011 at 1:43 PM, deathweaselx86 wrote:
> Howdy guys, I am new.
>
> I've been converting lists to sets, then back to lists again to get
> unique lists.
> e.g
>
> Python 2.5.2 (r252:60911, Jan 20 2010, 21:48:48)
> [GCC 4.2.4 (Ubuntu 4.2.4-1ubuntu3)] on linux2
> Type "help", "copyrigh
On Tue, Jun 21, 2011 at 12:05 PM, Billy Mays wrote:
> I know I could use enumerate:
>
> for i, v in enumerate(myList):
> doStuff(i, myList[i])
>
> ...but that stiff seems clunky.
Why not:
for i, v in enumerate(myList):
doStuff(i, v)
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On Tue, Jun 21, 2011 at 12:26 PM, Ian wrote:
> myForkedScript has code like this:
> if fail:
>os._exit(1)
> else:
>os._exit(os.EX_OK)
>
> Is using os._exit() the correct way to get a return value back to the
> main process?
sys.exit() is the preferred way.
> Where did you find the Unix docs you pasted in? I didn't find it in
> the man pages. Thank you. Based on what you say, I will change my
> os._exit() to sys.exit().
http://docs.python.org/library/os.html#os.wait
http://docs.python.org/library/os.html#os.waitpid
I don't know what man pages you
[:]
>
> for n in number_list:
> for x in range(2, n):
> if n % x == 0:
> primes.remove(n)
> break
>
> return primes
Also, primality testing and factorization are very similar problems,
and the same range optimizati
On Tue, Jun 21, 2011 at 3:09 PM, John Salerno wrote:
> Don't worry, I was still unclear about what to do after reading all
> the responses, even yours! But one thing that made me feel better was
> that I wasn't having a Python problem as much as a *math* problem. I
> changed my get_factors functio
also to commit everything immediately. Since
there is no HTTP request, the TransactionMiddleware does not get
invoked even if enabled. For controlled transactions you will need to
use the commit_on_success or commit_manually decorator /
context-managers:
https://docs.djangoproject.com/en/1.3/topics/db/t
On Tue, Jun 21, 2011 at 6:42 PM, News123 wrote:
> ###
> If running myapp.py I get following output:
>
> yes this line is executed
> Traceback (most recent call last):
> File "./myapp.py", line 11, in
> class Mini(models.Model):
> File
> "/opt/my_py
On Tue, Jun 21, 2011 at 6:21 PM, News123 wrote:
> Out of curiousity: Do you know whether the imports would be executed for
> each potential command as soon as I call manage.py or only
> 'on demand'?
Off the top of my head, I don't know.
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On Tue, Jun 21, 2011 at 11:58 PM, Chris Torek wrote:
> I was curious about implementing prime factorization as a generator,
> using a prime-number generator to come up with the factors, and
> doing memoization of the generated primes to produce a program that
> does what "factor" does, e.g.:
This
between their squares are composite,
thereby failing to add the next prime to the table until after its
square has been reached. This seems a rather unlikely scenario, but I
can't say for certain that it never happens.
The Haskell version does not contain this flaw, as far as I can tell.
Cheers,
Ian
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On Wed, Jun 22, 2011 at 3:54 PM, Steven D'Aprano
wrote:
> Fortunately, that's not how it works, and far from being a "limitation",
> it would be *disastrous* if iterables worked that way. I can't imagine
> how many bugs would occur from people reassigning to the loop variable,
> forgetting that it
On Thu, Jun 23, 2011 at 1:58 PM, John Salerno wrote:
> After I've run the re.search function on a string and no match was
> found, how can I access that string? When I try to print it directly,
> it's an empty string, I assume because it has been "consumed." How do
> I prevent this?
This has noth
's either @memoize or @memoize(foo), but never just the confusing
@memoize().
Cheers,
Ian
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On Tue, Jun 28, 2011 at 1:33 PM, hisan wrote:
> How to create n number thread in python. i want iterate over the for loop and
> create a thread for each iteration .
> sample code
> for i in range(o,50):
> i want to create 50 thread here which call the same function. how start and
> stop each t
On Tue, Jun 28, 2011 at 1:33 PM, Xah Lee wrote:
> this will be of interest to those bleeding-edge pythoners.
>
> “what… is the airspeed velocity of an unladen swallow?”
>
> xahlee.org/funny/unladen_swallow.html
More interesting to me is not the ad but that Wolfram Alpha will
actually answer the q
On Wed, Jun 29, 2011 at 1:30 PM, Ethan Furman wrote:
> How about just having one bit of code that works either way?
How would you adapt that code if you wanted to be able to decorate a
function that takes arguments?
This also won't work if the argument to the decorator is itself a
callable, such
On Wed, Jun 29, 2011 at 3:29 PM, Ethan Furman wrote:
> 8<
> class enclose(object):
> func = None
> def __init__(self, char='#'):
> self.char = char
> if callable(char): # was a function passed in directly?
>
; What should it do in Python 3.2? Exception or max(seconds, 0)?
sleep(0) has some special semantics on Windows. Raising ValueError
(or IOError to match Linux) makes the most sense to me.
Cheers,
Ian
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Isn't that what the decorator syntax is essentially doing?
No. The decorator syntax is doing:
roll_die = move(roll_die)
If you then call roll_die, that is equivalent to "move(roll_die)()",
which is not the same thing as "move(roll_die())".
Cheers,
Ian
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aken to be a
sequence of strings which are the exported names. Otherwise, the
exported names are taken to be all the names in the module dict that
don't begin with an underscore.
Cheers,
Ian
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ity, but for completeness they should be stripped out of the
final regex.
The possibility of nested HTML in the caption is allowed for by using
a negative look-ahead assertion to accept any tag except a closing
. It would break if you had nested tags, but then that would
be invalid html anyway.
C
it works:
>>> import re
>>> s = '''
...
... jamie's cat! Her blog is http://example.com/
... jamie/">http://example.com/jamie/
... '''
>>> print re.sub(pattern, replace, s)
jamie's cat! Her blog is http://example.com/
jamie/">http://example.com/jamie/
Cheers,
Ian
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On Wed, Jul 6, 2011 at 12:49 AM, Ulrich Eckhardt
wrote:
> Mel wrote:
>> In wx, many of the window classes have Create methods, for filling in
>> various attributes in "two-step construction". I'm not sure why, because
>> it works so well to just supply all the details when the class is called
>>
On Wed, Jul 6, 2011 at 9:04 AM, Mihai Badoiu wrote:
> How do I do interactive plots in python? Say I have to plot f(x) and g(x)
> and I want in the plot to be able to click on f and make it disappear. Any
> python library that does this?
Matplotlib can be integrated with either wxPython or PyQt
kinter
event loop rather than the wxPython event loop. If you want to use
the wxToolTip widget, then you should write your program to use
wxPython only. Alternatively, googling for "tkinter tooltip" turns up
a couple of recipes; you could try one of those.
Cheers,
Ian
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On Wed, Jul 6, 2011 at 12:36 PM, Andrew Berg wrote:
> On 2011.07.06 01:19 PM, rantingrick wrote:
>> ##
>> The Roman Stawman Sketch
>> ##
> Nice try, but you have to use a Monty Python sketch (and you have to
> spell correctly :-P ).
Seriously. The
On Wed, Jul 6, 2011 at 1:07 PM, Phlip wrote:
> If I call m = md5() twice, I expect two objects.
>
> I am now aware that Python bends the definition of "call" based on
> where the line occurs. Principle of least surprise.
There is no definition-bending. The code:
"""
def file_to_hash(path, m = h
On Wed, Jul 6, 2011 at 1:30 PM, Billy Mays wrote:
> I was looking through the python source and noticed that long multiplication
> is done using the Karatsuba method (O(~n^1.5)) rather than using FFTs O(~n
> log n). I was wondering if there was a reason the Karatsuba method was
> chosen over the
On Wed, Jul 6, 2011 at 2:21 PM, Billy Mays wrote:
> Side note: Are Numpy/Scipy the libraries you are referring to?
I was thinking more of gmpy or mpmath, but I'm not personally well
acquainted with any of them.
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On Thu, Jul 7, 2011 at 2:30 AM, Ulrich Eckhardt
wrote:
> Even worse, most people would actually pay for its use, because they don't
> use numbers large enough to merit the Schönhage–Strassen algorithm.
As it stands, Karatsuba is only used for numbers greater than a
specific threshold. Adding Sch
On Thu, Jul 7, 2011 at 9:49 AM, Ian Kelly wrote:
> On Thu, Jul 7, 2011 at 2:30 AM, Ulrich Eckhardt
> wrote:
>> Even worse, most people would actually pay for its use, because they don't
>> use numbers large enough to merit the Schönhage–Strassen algorithm.
>
> As
On Thu, Jul 7, 2011 at 1:12 AM, Ulrich Eckhardt
wrote:
>>> Just guessing, is it legacy, C-with-classes code rather than C++ code
>>> perhaps? Haven't looked at wx for a while. Such code typically lacks
>>> understanding of exceptions, which are the only way to signal failure
>>> from e.g. construc
On Fri, Jul 8, 2011 at 1:05 PM, sal migondis wrote:
>> I believe...
>
> Shifting from 'belief' to 'believe', the latter having a considerably
> wider semantic scope.
Wider how? Would you care to give an example of something that is
believed but is not a belief?
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On Fri, Jul 8, 2011 at 3:23 PM, Benjamin Kaplan
wrote:
> String formatting is the One Right Way here. It's fine to use string
> concatenation for a few things, but the operation is O(n^2) because each
> concat occurs one at a time: Python allocates space for a string the size of
> the first 2 thin
;out = out + v"
100 loops, best of 3: 6.59 usec per loop
$ python -m timeit -s "v = 'x' * 10; out = ''" "out = v + out"
10 loops, best of 3: 268 usec per loop
Good to know. I had no idea such an optimization existed.
Cheers,
Ian
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On Sat, Jul 9, 2011 at 12:16 AM, Chris Angelico wrote:
> Has the same optimization been implemented for Unicode? The page
> doesn't mention Python 3 at all, and I would guess that the realloc
> optimization would work fine for both types of string.
Seems to be implemented for strs in 3.2, but not
n" (xauth.org) scheme? The name is
unfortunately overloaded.
Second, have you tried googling for "python xauth"?
Cheers,
Ian
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On Mon, Jul 11, 2011 at 8:50 AM, Sébastien Volle
wrote:
> Could it have been made optional, like the trailing comma in list
> declaration?
Cobra makes the colons optional, so probably yes.
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snippet I used to demonstrate the keyword property:
What Thomas said. But also, please note that "property" is a builtin,
not a keyword.
Cheers,
Ian
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On Mon, Jul 11, 2011 at 10:53 AM, Anthony Kong
wrote:
> Thanks again for your input, Thomas.
> I normally prefer
> not_here = property(lambda self: self.__get_not_here(), lambda self, v:
> self.__set_not_here(v))
> than
> not_here = property(__get_not_here, __set_not_here)
> Because it allows me t
On Mon, Jul 11, 2011 at 11:21 AM, Anthony Kong
wrote:
> Awesome, Thomas. The trick only works if there is only one leading
> underscore in the method names.
> The following example works as I expected for the derived class B.
> class A(object):
> def __init__(self):
> self.__not_here =
On Tue, Jul 12, 2011 at 11:50 AM, Andrew Berg wrote:
> On 2011.07.12 12:32 PM, Gnarlodious wrote:
>> OK, that sets a value at init time. But is there a similar built-in
>> to run whenever the class instance is called?
> What do you mean by call an instance? Do you want to run certain code
> whenev
On Wed, Jul 13, 2011 at 8:19 AM, Anthony Kong wrote:
> One of the main difference is that pypy supports only R-Python, which stands
> for 'Restricted Python".
> It is a subset of C-python language.
This is wrong. The PyPy *interpreter* is written in RPython. At the
application level, PyPy suppo
On Wed, Jul 13, 2011 at 10:29 AM, Terry Reedy wrote:
> The iteration protocol and the notion of iteraables as the common data
> exchange format, with associated notions of iterators, generator functions,
> and generators, are important features of Python. Not really functional
> style, I guess.
X
Announcing Urwid 0.9.9.2
Urwid home page:
http://excess.org/urwid/
Screen shots:
http://excess.org/urwid/examples.html
Tarball:
http://excess.org/urwid/urwid-0.9.9.2.tar.gz
About this release:
===
This release is *not* the big, exciting,
wow-look
On Thu, Jul 14, 2011 at 11:00 AM, monkeys paw wrote:
> You could use the below code. time.sleep(# seconds in a day)
> where i == 30 would run once a day for a month
>
> import time
> i=0
> while (1):
> print 'hello'
> time.sleep(2) # Change this to number of seconds in a day
>
On Thu, Jul 14, 2011 at 1:46 PM, Billy Mays wrote:
> def getLines(f):
> lines = []
> for line in f:
> lines.append(line)
> return lines
>
> with open('/var/log/syslog', 'rb') as f:
> lines = getLines(f)
> # do some processing with lines
> # /var/log/syslog gets updated in
On Sat, Jul 16, 2011 at 9:09 PM, Steven D'Aprano
wrote:
>> Personally, I like to use the tab _key_ as an input device, but to have
>> my editor write real spaces to the file in consequence. With pure
>> spaces, the text is laid out reliably for us both. And so I have my
>> editor set to that behav
On Sun, Jul 17, 2011 at 1:29 AM, Andrew Berg wrote:
> You're right. TabError is only raised if the initial indentation is
> inconsistent.
> Not legal:
> def spam():
> print('Wonderful spam!\n')
> <4 spaces>print('Bloody Vikings!')
>
> Legal:
> def eggs():
> print(
> 'Blech!\n','Whaddya mean, "blec
On Sun, Jul 17, 2011 at 9:15 AM, rantingrick wrote:
>> I can write my code to 80
>> columns using 4-space tabs, but if somebody later tries to edit the
>> file using 8-space tabs, their lines will be too long.
>
> THEIR LINES is the key words. A tab control is a tab control is a (you
> guessed it
On Sun, Jul 17, 2011 at 10:29 AM, rantingrick wrote:
> I hate vertical white-space. I follow Python style guide suggestions,
> and then some! I hate when people insert spaces into code blocks and
> function/method bodies. If you feel a space must be inserted then that
> is a good clue you should
On Sun, Jul 17, 2011 at 1:54 PM, rantingrick wrote:
> On Jul 17, 1:48 pm, Ian Kelly wrote:
>
>> Let me get this straight. You want us to use tabs so that individuals
>> can set their tab width to however many spaces they want, but then you
>> want everybody to set thei
On Sun, Jul 17, 2011 at 2:12 PM, rantingrick wrote:
> On the face of it one might think vertical tabs are a good idea
> however newlines work just fine. There is no reason for expanding
> vertical whitespace to create readble code. If you can offer a good
> reason i'm listening. Also be sure to po
2011/7/17 ΤΖΩΤΖΙΟΥ :
> Jumping in:
>
> What if a construct
>
> xx(*args1, **kwargs1)yy(*args2, **kwargs2)
>
> was interpreted as
>
> xxyy(*(args1+args2), **(kwargs1+kwargs2))
>
> (Note: with **(kwargs1+kwargs2) I mean "put keyword arguments in the
> order given", since dicts can't be added)
>
>
On Mon, Jul 18, 2011 at 11:12 AM, Billy Mays
<81282ed9a88799d21e77957df2d84bd6514d9...@myhashismyemail.com> wrote:
> I gave it a shot. It doesn't do any of the Unicode delims, because let's
> face it, Unicode is for goobers.
Uh, okay...
Your script also misses the requirement of outputting the i
On Tue, Jul 19, 2011 at 12:22 AM, Thomas Jollans wrote:
>> Supplemental: The above can be simplified to
>>
>> def makeadder(y): return lambda x: x + y
>>
>
> In turn:
>
> makeadder = lambda y: lambda x: x + y
That's not an improvement. lambda is for making anonymous functions.
If you're going to
On Tue, Jul 19, 2011 at 10:58 AM, Thomas Jollans wrote:
> No, it's not an improvement. It's an illustration.
I get that. The difference I pointed out between your
"simplification" and the other Thomas's is the reason why yours would
be unpythonic whilst his is fine.
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On Tue, Jul 19, 2011 at 10:54 AM, Xah Lee wrote:
> On Sunday, July 17, 2011 2:48:42 AM UTC-7, Raymond Hettinger wrote:
>> On Jul 17, 12:47 am, Xah Lee wrote:
>> > i hope you'll participate. Just post solution here. Thanks.
>>
>> http://pastebin.com/7hU20NNL
>
> just installed py3.
> there seems t
On Tue, Jul 19, 2011 at 8:12 PM, sturlamolden wrote:
> 3. Unpythonic memory management: Python references to deleted C++
> objects (PyQt). Manual dialog destruction (wxPython). Parent-child
> ownership might be smart in C++, but in Python we have a garbage
> collector.
Perhaps you already know th
On Wed, Jul 20, 2011 at 12:29 AM, jmfauth wrote:
>> Then it is hard to code precisely.
>>
>
> Not really. The trick is to count the different opener/closer
> separately.
> That is what I am doing to check balanced brackets in
> chemical formulas. The rules are howerver not the same
> as in math.
On Wed, Jul 20, 2011 at 4:18 AM, risboo6909 wrote:
> Hello all,
>
> I've noticed some strange behaviour of functools.total_ordering
> decorator, at least it seems strange to me.
Looks like this is already known and fixed as of March:
http://bugs.python.org/issue10042
--
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On Thu, Jul 21, 2011 at 6:58 AM, Xah Lee wrote:
> Thanks a lot for the fix Raymond.
That fix was from Thomas Jollans, not Raymond Hettinger.
> Though, the code seems to have a minor problem.
> It works, but the report is wrong.
> e.g. output:
>
> 30068: c:/Users/h3/web/xahlee_org/p/time_machine\
lhall.com/RosMudAndroid.py and
> give it a whirl!
I also have a half-finished (but fully usable) MUD client written in
Python. It uses Twisted and wxPython and is cross-platform. I would
be willing to share the code if somebody is interested.
Cheers,
Ian
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On Fri, Jul 22, 2011 at 6:59 AM, Neil Cerutti wrote:
> Under the assumption that leading white space is important for
> code formatting, but that all alignment after that is
> unimportant.
...unless you're trying to adhere to a line length limit. "80
characters" is a lot easier to do in a fixed-
On Fri, Jul 22, 2011 at 11:43 AM, rusi wrote:
> Also it is more optimized. For the same size -- and therefore
> readability -- a proportional font packs in more text.
More text == less readability. This is one of the reasons I limit my
line lengths.
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On Fri, Jul 22, 2011 at 2:38 PM,
mhearne808[insert-at-sign-here]gmail[insert-dot-here]com
wrote:
> I am just trying to wrap my head around decorators in Python, and I'm
> confused about some behavior I'm seeing. Run the code below (slightly
> adapted from a Bruce Eckel article), and I get the fol
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