Re: Photoimage on button appears pixelated when button is disabled

On May 17, 7:11 am, Tim Golden wrote: > Dustan wrote: > > On May 15, 2:59 pm, Dustan wrote: > >> In tkinter, when I place a photoimage on a button and disable the > >> button, the image has background dots scattered through the image. > >> Searchin

Re: Photoimage on button appears pixelated when button is disabled

On May 15, 2:59 pm, Dustan wrote: > In tkinter, when I place a photoimage on a button and disable the > button, the image has background dots scattered through the image. > Searching the web, I wasn't able to find any documentation on this > behavior, nor how to turn it off. So

Photoimage on button appears pixelated when button is disabled

w can I extract the base-64 encoding of a GIF, so I can put the image directly into the code instead of having to keep a separate file for the image? All responses appreciated, Dustan -- http://mail.python.org/mailman/listinfo/python-list

Re: How do I escape slashes the string formatting operator? (or: why is it behaving this way?)

On May 6, 6:51 pm, marek.ro...@wp.pl wrote: > Dustan napisa³(a): > > > Python 2.5.2 (r252:60911, Feb 21 2008, 13:11:45) [MSC v.1310 32 bit > > (Intel)] on > > win32 > > Type "help", "copyright", "credits" or "license" for more i

How do I escape slashes the string formatting operator? (or: why is it behaving this way?)

Python 2.5.2 (r252:60911, Feb 21 2008, 13:11:45) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> 'HELP!%(xyz)/' % {'xyz':' PLEASE! '} Traceback (most recent call last): File "", line 1, in ValueError: unsupported format character '/

Re: List question

On Mar 21, 3:57 pm, Paul Rubin wrote: > [EMAIL PROTECTED] writes: > >if 'one' and 'two' in f: > >alist.append(f) > > Use: > if 'one' in f and 'two' in f: ... Personally, I would put parentheses around to be clearer: if ('one' in f) and ('two' in f

Re: Do any of you recommend Python as a first programming language?

On Mar 22, 10:40 am, jmDesktop <[EMAIL PROTECTED]> wrote: > For students 9th - 12th grade, with at least Algebra I. Do you think > Python is a good first programming language for someone with zero > programming experience? Using Linux and Python for first exposure to > programming languages and p

Re: List mutation method gotcha - How well known?

On Mar 13, 1:56 pm, yoz <[EMAIL PROTECTED]> wrote: > This will cause a hidden feature of python and the OS, known as the > 'python easter egg', to activate - erasing all data on the hard disk and > then reporting how many bytes of data are left. > > Usually "None" ;-} - This really is a 'gotcha'...

Re: This actually works.

On Mar 13, 6:19 pm, "Dotan Cohen" <[EMAIL PROTECTED]> wrote: > On 14/03/2008, Dustan <[EMAIL PROTECTED]> wrote: > > > you.screw() > > Ah, you are pushing sex pills. > > > self.thank(God, encapsulation) > > And bibles? Interesting combin

Re: This actually works.

On Mar 13, 3:16 pm, [EMAIL PROTECTED] wrote: > not self.believe > programming.screw() > > self.serious; this.works > > make_money(EASY) > anyone.can_do(this) you.screw() self.thank(God, encapsulation) not self.want_to_know(you.screw.func_code) programming.is_good -- http://mail.python.org/mailma

Re: List mutation method gotcha - How well known?

On Mar 13, 2:36 am, "Hendrik van Rooyen" <[EMAIL PROTECTED]> wrote: > Hi, > > I am surprised that it took me so long to bloody my nose on this one. > > It must be well known - and I would like to find out how well known. > > So here is a CLOSED BOOK multiple choice question - no RTFM, > no playing

Re: iter(lambda:f.read(8192),'')

On Feb 24, 5:11 am, gert <[EMAIL PROTECTED]> wrote: > what is the difference between iter(lambda:f.read(8192), ') and > iter(f.read(8192),'') ? One does not work, and one is syntactically incorrect: >>> iter(f.read(8192),'') Traceback (most recent call last): File "", line 1, in iter(f.re

Re: class static variables and __dict__

On Feb 16, 5:59 pm, Zack <[EMAIL PROTECTED]> wrote: > Zack wrote: > > Diez B. Roggisch wrote: > >> Zack schrieb: > >>> If I have a class static variable it doesn't show up in the __dict__ > >>> of an instance of that class. > > >>> class C: > >>>n = 4 > > >>> x = C() > >>> print C.__dict__ > >>

Re: class static variables and __dict__

On Feb 16, 4:40 pm, Zack <[EMAIL PROTECTED]> wrote: > what method can you use on x to find all available > attributes for that class? >>> class Foo(object): bar = "hello, world!" def __init__(self, baz): self.baz = baz >>> x = Foo(42) >>> x.__dict__.keys() # Does

Re: Edit Python code programmatically

On Feb 9, 6:10 am, Alex <[EMAIL PROTECTED]> wrote: > Guilherme Polo wrote: > > 2008/2/9, Alex <[EMAIL PROTECTED]>: > > >> Which library could you recommend to perform simple editing of Python > >> code (from Python program)? For example, open *.py file, find specific > >> function definition, add

Re: Why not a Python compiler?

On Feb 5, 2:37 am, Kay Schluehr <[EMAIL PROTECTED]> wrote: > On Feb 5, 9:19 am, Santiago Romero <[EMAIL PROTECTED]> wrote: > > > ( Surely if this question has been asked for a zillion of times... ) > > Sure. You can access comp.lang.python via groups > .google.com. > It has a > search function.

Re: Python feature request : operator for function composition

On Feb 4, 10:11 am, Arnaud Delobelle <[EMAIL PROTECTED]> wrote: > This is nice. Thanks. > * I wouldn't choose '&' as the composing operator as when I read > 'double & square' I think 'take an x, double it & square it' which is > the wrong interpretation (perhaps << instead?). A very good point t

Re: Python feature request : operator for function composition

On Feb 2, 11:09 pm, Kay Schluehr <[EMAIL PROTECTED]> wrote: [snip] While you're waiting for it to be implemented, you can build your own version as a decorator. Here's an example written in haste: >>> class composer(object): def __init__(self, *funcs): self.funcs = funcs

Re: Dictionary Keys question

On Jan 31, 7:35 am, Ben Finney <[EMAIL PROTECTED]> wrote: > Dustan <[EMAIL PROTECTED]> writes: > > On Jan 30, 7:02 pm, FireNWater <[EMAIL PROTECTED]> wrote: > > > Thank you for the explanation. . . I think I now have a (foggy) > > > understanding o

Re: Dictionary Keys question

On Jan 30, 7:02 pm, FireNWater <[EMAIL PROTECTED]> wrote: > Thank you for the explanation. . . I think I now have a (foggy) > understanding of hash tables. It seems to be a way to create order > (an index) out of disorder (random numbers or characters) behind the > scenes. . The key thing to real

Re: Dictionary Keys question

On Jan 30, 4:47 pm, FireNWater <[EMAIL PROTECTED]> wrote: > I'm curious why the different outputs of this code. If I make the > dictionary with letters as the keys, they are not listed in the > dictionary in alphabetical order, but if I use the integers then the > keys are in numerical order. > >

Re: py3k feature proposal: field auto-assignment in constructors

On Jan 27, 12:41 pm, Torsten Bronger <[EMAIL PROTECTED]> wrote: > Hallöchen! > > > > Wildemar Wildenburger writes: > > André wrote: > > >> Personally, I like the idea you suggest, with the modification > >> that I would use "." instead of "@", as in > > >> class Server(object): > >> def __init_

Re: strange syntax rules on list comprehension conditions

On Jan 18, 1:04 pm, "Chris Mellon" <[EMAIL PROTECTED]> wrote: > On Jan 18, 2008 12:53 PM, Nicholas <[EMAIL PROTECTED]> wrote: > > > I was quite delighted today, after extensive searches yielded nothing, to > > discover how to place an else condition in a list comprehension. > > Trivial mask example

Re: anti-spam policy for c.l.py?

On Jan 16, 11:31 am, _wolf <[EMAIL PROTECTED]> wrote: > On Jan 16, 3:11 pm, Bruno Desthuilliers > [EMAIL PROTECTED]> wrote: > > Jeroen Ruigrok van der Werven a écrit : > > > > -On [20080116 12:51], Bruno Desthuilliers ([EMAIL PROTECTED]) wrote: > > >> Apart from checking posts headers and complain

Re: Simple List division problem

On Jan 12, 2:25 pm, Paul Rubin wrote: > marcstuart <[EMAIL PROTECTED]> writes: > > what I would like to get is 3 sublists > > > print z[0] = [1,2,3] > > print z[2] = [4,5,6] > > print z[3] = [7,8,9,10] > > Are you SURE you want that? In almost every situation I've seen,

Re: What is "lambda x=x : ... " ?

On Jan 10, 12:36 pm, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > I've figured it out, it is default argument. > print y() > gives 13 as result. > > It's a bit evil though. Why? It's the same syntax as with functions: x=3 def y(x=x): return x+10 print y(2) # prints 12 print y() # print

Re: Python's great, in a word

On Jan 7, 11:40 am, Martin Marcher <[EMAIL PROTECTED]> wrote: > it's pythonicness. "it is pythonicness"??? -- http://mail.python.org/mailman/listinfo/python-list

Re: Python's great, in a word

On Jan 7, 7:09 am, [EMAIL PROTECTED] wrote: > I'm a Java guy who's been doing Python for a month now and I'm > convinced that > > 1) a multi-paradigm language is inherently better than a mono-paradigm > language > > 2) Python writes like a talented figure skater skates. > > Would you Python old-tim

Re: fastest method to choose a random element

On Jan 5, 4:16 am, [EMAIL PROTECTED] wrote: > The warning "The group you are posting to is a Usenet group. Messages > posted to this group will make your email address visible to anyone on > the Internet." means a person, but not a bot, may see my email > address, so it is safe to use my real addre

Re: Why does __builtins__ mean different things...

On Dec 22, 1:59 pm, James Stroud <[EMAIL PROTECTED]> wrote: > Dustan wrote: > > On Dec 21, 8:11 pm, James Stroud <[EMAIL PROTECTED]> wrote: > >> I swear there is another thread going on here of which I am not aware. > > > You just keep on telling yourself

Re: Performance on local constants?

On Dec 22, 6:04 am, John Machin <[EMAIL PROTECTED]> wrote: > t3 = re.compile('whatever').search Ack! No! Too Pythonic! GETITOFF! GETITOFF!! -- http://mail.python.org/mailman/listinfo/python-list

Re: Why does __builtins__ mean different things...

On Dec 21, 8:11 pm, James Stroud <[EMAIL PROTECTED]> wrote: > I swear there is another thread going on here of which I am not aware. You just keep on telling yourself that. -- http://mail.python.org/mailman/listinfo/python-list

Re: Python implementation of "include"

> [EMAIL PROTECTED] wrote: > > Hello, > > > I've been using the Python-based Karrigell web application framework. > > It has the very handy word "include" that inserts a code file into > > into the stream of execution. E.g. if myFile.py contains the code: > > > print "This is a message from myFile.

Re: Tuning question

On Nov 28, 3:15 pm, Wally Lepore <[EMAIL PROTECTED]> wrote: > Hi Graham > > Is this email still good? Not anymore. You just gave it out to millions of spammers on Usenet. > Its been awhile since we spoke last on the tuning list. Are you still on > Yahoo messenger? > Also, what is your email addre

Re: How to use list as key of dictionary?

On Nov 6, 3:58 am, Duncan Booth <[EMAIL PROTECTED]> wrote: > Wildemar Wildenburger <[EMAIL PROTECTED]> wrote: > > maybe something like this could help: > > > def tupleize(non_tuple): > > try: > > return tuple(tupleize(thing) for thing in non_tuple) > > except TypeError: > >

Re: how does google search in phrase

On Nov 5, 7:14 am, Jeff <[EMAIL PROTECTED]> wrote: > Here is a detailed explanation: > > http://www.google.com/technology/pigeonrank.html Ha ha... Hilarious. -- http://mail.python.org/mailman/listinfo/python-list

Re: how does google search in phrase

On Nov 4, 6:21 am, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > hi my friends; > google can searching in phrase but it is imposible. it have a lot of > page in data base and quadrillions sentence it can't search in > fulltxt all of them .it need a super algorithm. ý need the algorithm > now. i

Re: setting variables in outer functions

On Oct 31, 5:59 pm, "Chris Mellon" <[EMAIL PROTECTED]> wrote: > On Oct 31, 2007 5:49 PM, Dustan <[EMAIL PROTECTED]> wrote: [snip] I'm not going to respond to any of this, but I'm just going to say: I'm not claiming that the use of closures is common. I&

Re: setting variables in outer functions

On Oct 31, 7:08 am, Duncan Booth <[EMAIL PROTECTED]> wrote: > Dustan <[EMAIL PROTECTED]> wrote: > > On Oct 30, 11:29 am, Duncan Booth <[EMAIL PROTECTED]> > > wrote: > >> Neil Cerutti <[EMAIL PROTECTED]> wrote: > >> > It's allows a

Re: setting variables in outer functions

On Oct 30, 11:29 am, Duncan Booth <[EMAIL PROTECTED]> wrote: > Neil Cerutti <[EMAIL PROTECTED]> wrote: > > It's allows a standard programming idiom which provides a > > primitive form of object oriented programming using closures to > > represent state. > > > def account(opening_balance): > > bal

Re: A Python 3000 Question

On Oct 29, 7:59 pm, Wildemar Wildenburger <[EMAIL PROTECTED]> wrote: > Bjoern Schliessmann wrote: > > The inconsistencies arise, IMHO, if an OO language introduces > > non-object types for performance reasons, after that gets wrapper > > classes to wrap those primitives, and even later gets the abi

Re: "and" and "or" on every item in a list

On Oct 29, 5:57 pm, GHZ <[EMAIL PROTECTED]> wrote: > Is this the best way to test every item in a list? No. The biggest problem is, obviously, you don't take advantage of builtins any() and all(), or write corresponding short-circuiting versions for python versions before 2.5. The second problem

Re: Using msvcrt (in Windows), how to catch Enter key?

On Oct 29, 4:26 am, Dick Moores <[EMAIL PROTECTED]> wrote: > Windows XP Pro, Python 2.5.1 > > import msvcrt > while True: > if msvcrt.kbhit(): > key = msvcrt.getch() > if key == 'Enter' > do something > > Is there a way to catch the pressing of the 'Enter' key? > > T

Re: simple question on dictionary usage

On Oct 27, 1:16 am, Frank Millman <[EMAIL PROTECTED]> wrote: > On Oct 27, 8:02 am, Frank Millman <[EMAIL PROTECTED]> wrote: > > > > This should work - > > > > egt = dict([i for i in d.items() if i[0].startswith('E')]) > > > Of course I meant record.items(), not d.items(). Sorry. > > > Frank > > On

Re: calling a function from string

On Oct 22, 5:46 am, Jarek Zgoda <[EMAIL PROTECTED]> wrote: > Do not use eval(). Not only it's deprecated, it's also unsafe. I don't think it's deprecated; it doesn't say so: http://docs.python.org/lib/built-in-funcs.html#l2h-25 -- http://mail.python.org/mailman/listinfo/python-list

Re: calling a function from string

On Oct 22, 4:41 am, "Francesco Guerrieri" <[EMAIL PROTECTED]> wrote: > On 10/22/07, james_027 <[EMAIL PROTECTED]> wrote: > > > hi, > > > i have a function that I could like to call, but to make it more > > dynamic I am constructing a string first that could equivalent to the > > name of the functio

Re: dynamic invoke

On Oct 19, 6:34 am, Nils <[EMAIL PROTECTED]> wrote: > Use apply(): http://docs.python.org/lib/non-essential-built-in-funcs.html Did you actually read the title of the page you linked to ("Non- essential Built-in Functions")? -- http://mail.python.org/mailman/listinfo/python-list

Re: Noob: Loops and the 'else' construct

On Oct 19, 3:12 am, Thorsten Kampe <[EMAIL PROTECTED]> wrote: > So a for/else loop is exactly the same thing as a for loop with the > else clause outside the loop (except for "break")? Am I missing something here? It sounds to me like you just described two identical constructs. > Guess that's wh

Re: Strange behaviour with reversed()

On Oct 18, 3:52 am, Steven D'Aprano <[EMAIL PROTECTED] cybersource.com.au> wrote: > On Thu, 18 Oct 2007 15:24:27 +1000, Ben Finney wrote: > > Steven D'Aprano <[EMAIL PROTECTED]> writes: > > >> and help(reversed) but neither gives any insight to what happens when > >> you use reversed() on a sequenc

Re: hi every one

On Oct 10, 7:19 pm, kasim <[EMAIL PROTECTED]> wrote: > Dear __, >>> __.dear() Traceback (most recent call last): File "", line 1, in __.dear() NameError: name '__' is not defined >>> __ = self >>> __.dear() Traceback (most recent call last): File "", line 1, in

Re: Last value of yield statement

On Oct 10, 5:19 am, Shriphani <[EMAIL PROTECTED]> wrote: > Hello all, > > Let us say I have a function like this: > > def efficientFiller(file): Note that you are shadowing the built-in variable 'file' here. Better use 'filename', or something to that effect. > worthless_list = [] >

Re: novice list

On Oct 5, 6:01 am, István <[EMAIL PROTECTED]> wrote: > Could somebody suggest me a novice Python list, please? > Thanks, Istvan You're there. -- http://mail.python.org/mailman/listinfo/python-list

Re: scope, modyfing outside object from inside the method

On Sep 24, 2:13 am, Peter Otten <[EMAIL PROTECTED]> wrote: > @property > def value(self): > return self._resultset[self._row][self._col] I remember a thread where someone created a version of property that worked like this, but it's not in the standard python release, unless it is

Re: Sets in Python

On Sep 19, 10:58 pm, Bryan Olson <[EMAIL PROTECTED]> wrote: > Bad news: Python 3000 has no immutable type for byte-strings. > The new bytes type cannot serve for dict keys or set members. > Many things one would want to hash are unhashable -- for > example, the results of the hash functions in hash

Re: Sets in Python

On Sep 18, 7:39 pm, sapsi <[EMAIL PROTECTED]> wrote: > Hello, > I recently tried using the set function in Python and was surprised to > find that > > a=[ 1, 2,3, [1,2] ] > > doesn't work with 'set', throwing TyperError (unhashable exception). I > found out that this is because lists can't be hashe

Re: Python "with"

On Sep 16, 3:07 pm, Ivan Voras <[EMAIL PROTECTED]> wrote: > Hi, > > I'm looking for a construct that's similar to (Turbo) Pascal's "with" > statement. I read about the Python's new "with" statement, but I was > dissapointed to learn that it does something different (I still don't > see how it's bet

Re: where are the .pyc files?

On Sep 16, 12:28 pm, Summercool <[EMAIL PROTECTED]> wrote: > so i have always heard of the .pyc files but for some reason i > don't see them on the Windows platform... when i have a program > called try.py and after running it for ages, i still don't have a > try.pyc file in my folder even

Re: Try this

On Sep 16, 3:46 am, GeorgeRXZ <[EMAIL PROTECTED]> wrote: > If you have Microsoft windows 98/2000/ME/XP/2003 Operating System on > your PC. > Then Open the Notepad and type the following sentence, and save the > file and close the notepad. Now reopen the file and you will find out > that, Notepad is

Re: Python statements not forcing whitespace is messy?

On Sep 15, 5:11 pm, James Stroud <[EMAIL PROTECTED]> wrote: > Steve Holden wrote: > > I don't know why you have a bug up your ass about it, as the > > Americans say. > > I think most Americans say "wild hare up your ass". We do not, in fact, > say "wild hair up your ass". Many of us can testify tha

Re: unexpected behavior: did i create a pointer?

On Sep 7, 3:07 am, gu <[EMAIL PROTECTED]> wrote: > hi to all! Hi! > after two days debugging my code, i've come to the point that the > problem was caused by an unexpected behaviour of python. or by lack of > some information about the program, of course! i've stripped down the > code to reproduc

Re: Check for dict key existence, and modify it in one step.

On Aug 28, 1:13 pm, rodrigo <[EMAIL PROTECTED]> wrote: > evan, > > yes, it does help. Works like it should: > > class CountingDictionary(dict): > def increment(self, key, delta=1): > self[key] = self.get(key, 0) + delta > > d = CountingDictionary() > d.increment('cat') > d.increment('do

Re: How to parse this line of code manually

On Aug 28, 2:59 am, "A.T.Hofkamp" <[EMAIL PROTECTED]> wrote: > On 2007-08-28, Davy <[EMAIL PROTECTED]> wrote: > > > > > On Aug 28, 11:00 am, Davy <[EMAIL PROTECTED]> wrote: > >> Hi all, > > >> It is well known that Python is appreciated for its merit of concise. > >> However, I found the over conci

Re: Let's Unite Against Jews and Mongrels!

On Aug 27, 2:13 am, Nenad Milicevic - The Aryan Serb <[EMAIL PROTECTED]> wrote: > Let's break the chains of Jewish and black domination! A) Why? B) What chains? -- http://mail.python.org/mailman/listinfo/python-list

Re: an eval()-like exec()

On Aug 27, 6:06 pm, "Matt McCredie" <[EMAIL PROTECTED]> wrote: > > A python interactive interpreter works by having the user type in some > > code, compiling and running that code, then printing the results. For > > printing, the results are turned into strings. > > > I would like make an interpret

Re: accessing keys in dict

On Aug 25, 7:41 am, Lawrence D'Oliveiro <[EMAIL PROTECTED] central.gen.new_zealand> wrote: > In message <[EMAIL PROTECTED]>, > > james_027 wrote: > > is there any difference between .. > > > for key in a_dict: > > > from > > > for key in a_dict.keys(): > > I'm assuming the former is equivalent to >

Re: How to optimise this code?

On Aug 21, 11:20 am, "J. Cliff Dyer" <[EMAIL PROTECTED]> wrote: > I suspect lambda might be your friend here too for making the code less > verbose, though I never really got the hang of lambdas, even though my > first programming experience was a scheme class way back when Ah well. That's be

Re: Where we need to use Python ?

On Aug 20, 10:13 am, Wildemar Wildenburger <[EMAIL PROTECTED]> wrote: > Michael Bentley wrote: > > On Aug 20, 2007, at 1:02 AM, [EMAIL PROTECTED] wrote: > > >> And Is it a interpreted language or a programming language > >> It comes in which category > > >> I very keen to know this please tell > >

Re: Where we need to use Python ?

On Aug 20, 3:02 am, [EMAIL PROTECTED] wrote: > Hi > > Iam new to Python > I know Perl, JScript,C,C++,Java > But i want to know where excatly this python come in to picture > > And Is it a interpreted language or a programming language > It comes in which category > > I very keen to know this please

Re: Guitar Reviews

On Aug 15, 7:32 am, [EMAIL PROTECTED] wrote: >>> op.mother.speak() Congratulations! You've just given your email address to millions of people across Usenet! What do you have to say for yourself? >>> op.respond() Awww, jeez, why'd y'all have to bring my mother into this? >>> op.mother.speak() You

Re: A dumb question about a class

On Aug 12, 7:35 pm, Dustan <[EMAIL PROTECTED]> wrote: > On Aug 12, 5:09 pm, Steven Bethard <[EMAIL PROTECTED]> wrote: > > > def iter_primes(): > > # an iterator of all numbers between 2 and +infinity > > numbers = itertools.count(2) >

Re: Complexity of methods etc

On Aug 12, 7:04 pm, "Nathan Harmston" <[EMAIL PROTECTED]> wrote: > Hi, > > I was wondering if anyone knew of any resources, where I might be able > to find information about the complexity of certain python functions > or little tips on how to reduce complexity. I mean like the "".join(), > kind of

Re: A dumb question about a class

On Aug 12, 5:09 pm, Steven Bethard <[EMAIL PROTECTED]> wrote: > def iter_primes(): > # an iterator of all numbers between 2 and +infinity > numbers = itertools.count(2) > > # generate primes forever > while True: > > # get the first number from

Re: python 2.5 bug

On Aug 11, 12:32 am, Thorsten Kampe <[EMAIL PROTECTED]> wrote: > 4. don't do something you don't fully understand (in this case >installing Python 2.5 and uninstalling Python 2.4) If we were all limited by that rule, none of us would never have used a computer in the first place. Operating a c

Re: Metaclass v.s. Property function.

On Aug 11, 7:33 am, Jens Thiede <[EMAIL PROTECTED]> wrote: > I don't like the property function, usable in the new-style classes, > because having to remember to manage a list of "foo = property(...)" > assignments just plain sucks, so I wrote a metaclass that does things > a little differently. Pl

Re: Deleting objects on the fly

On Aug 10, 1:49 pm, "Terry Reedy" <[EMAIL PROTECTED]> wrote: > "Campbell Barton" <[EMAIL PROTECTED]> wrote in message > > news:[EMAIL PROTECTED]| Michele Simionato wrote: > > | > Probably not, 'del x' just decrements the reference count, > > Or ashttp://docs.python.org/ref/del.html > puts it, " Del

Re: Question about properties.

On Aug 10, 5:31 am, [EMAIL PROTECTED] wrote: > On Aug 10, 12:21 pm, king kikapu <[EMAIL PROTECTED]> wrote: > > > > > Hi, > > > i read in a book the following code snippet that is dealing with > > properties: > > > class ProtectAndHideX(object): > > def __init__(self, x): > > assert isin

Re: programmatically define a new variable on the fly

On Aug 9, 5:30 pm, Dustan <[EMAIL PROTECTED]> wrote: > given the > variables data (the dictionary), name (in your example, 'g') and > *size* (in your example, 99), you can add it data as shown: erm... make that: given the variables data (the dictionary), name (in your e

Re: programmatically define a new variable on the fly

On Aug 9, 5:11 pm, Lee Sander <[EMAIL PROTECTED]> wrote: > Hi, > > I would like to define a new variable which is not predefined by me. > For example, > I want to create an array called "X%s" where "%s" is to be determined > based on the data I am processing. So, for example, if I the file > I'm re

Re: simple string backspace question

On Jul 31, 7:17 am, John Machin <[EMAIL PROTECTED]> wrote: > On Jul 31, 8:01 pm, [EMAIL PROTECTED] wrote: > > > > > On 31 srp, 11:44, [EMAIL PROTECTED] wrote: > > > > Hello, > > > > I have one simple string, backspace character question.Here is my > > > example: > > > > >>> text="Hello\bworld" > >

Re: a_list.count(a_callable) ?

On Jun 16, 3:37 pm, Dustan <[EMAIL PROTECTED]> wrote: > class SmartCountingList(list): > def count(self, item, func=lambda x: x): > return sum(1 for i in self if func(item)==item) > > Then, you would call it as follows: > a_list.count(True, a_function) I need

Re: a_list.count(a_callable) ?

On Jun 16, 12:04 pm, Wildemar Wildenburger <[EMAIL PROTECTED]> wrote: > class SmartCountingList(list): > def count(self, item, func=lambda x: x): > return len([item for item in self if func(item) is True]) A less bug-prone and (I would think) speedier example, although still untested:

Re: Should: "for k,v in **dictionary_instance" work?

On Jun 15, 2:17 pm, [EMAIL PROTECTED] wrote: > Does it make sense to provide this syntax for iterating key/value > pairs from a dictionary? > > for k,v in **dict(): >print k,v > > why is this not the same as: > > for k,v in dict().items(): > print k,v > > for that matter, why the heck doesn't

Re: a_list.count(a_callable) ?

On Jun 15, 12:52 pm, Ping <[EMAIL PROTECTED]> wrote: > On 6 15 , 11 17 , Dustan <[EMAIL PROTECTED]> wrote: > > > > > On Jun 15, 9:15 am, Ping <[EMAIL PROTECTED]> wrote: > > > > > sum(1 for i in a_list if a_callable(i)) > > > &

Re: a_list.count(a_callable) ?

On Jun 15, 9:15 am, Ping <[EMAIL PROTECTED]> wrote: > > sum(1 for i in a_list if a_callable(i)) > > > -- > > Carsten Haesehttp://informixdb.sourceforge.net > > This works nicely but not very intuitive or readable to me. > > First of all, the generator expression makes sense only to > trained eyes.

Re: a_list.count(a_callable) ?

On Jun 14, 3:37 pm, Dustan <[EMAIL PROTECTED]> wrote: > Which can then be converted into a generator expression (round > brackets instead of square brackets) to avoid the intermediate list: > len((i for i in a_list if a_callable(i))) Sorry for the excess of posts everybody. I jus

Re: a_list.count(a_callable) ?

On Jun 14, 3:37 pm, Dustan <[EMAIL PROTECTED]> wrote: > map and filter are basically obsolete after the introduction of list > comprehensions It is probably worth noting that list comprehensions do not require that you write a new function; they take any expression where appropria

Re: a_list.count(a_callable) ?

On Jun 14, 2:53 pm, Ping <[EMAIL PROTECTED]> wrote: > Hi, > > I'm wondering if it is useful to extend the count() method of a list > to accept a callable object? What it does should be quite intuitive: > count the number of items that the callable returns True or anything > logically equivalent (n

Re: How to create a tuple quickly with list comprehension?

On Jun 13, 5:37 am, Marc 'BlackJack' Rintsch <[EMAIL PROTECTED]> wrote: > In <[EMAIL PROTECTED]>, Diez B. Roggisch wrote: > > > No need to create the intermediate list, a generator expression works just > > fine: > > > a = tuple(i for i in range(10)) > > But `range()` creates the intermediate list

Re: running a random function

On Jun 7, 1:30 pm, Neil Cerutti <[EMAIL PROTECTED]> wrote: > On 2007-06-07, Stebanoid <[EMAIL PROTECTED]> wrote: > > > if you have a list of functions you can try this: > > > import random > > import math > > m[int(math.floor(len(m)*random.random()))]() # seems like Lisp > > Or rather m[random.ran

Re: running a random function

On Jun 7, 10:56 am, David Bear <[EMAIL PROTECTED]> wrote: > I would like to write some code that would randomly select a function from a > list of functions and call it. I was looking in the globals names space and > randomly selecting items that were of type function.. Careful!!! You don't want t

Re: get a list from a string

On Jun 7, 6:06 am, simon kagwe <[EMAIL PROTECTED]> wrote: > > exec("distances = [[1,1,1,1],[2,2,2,2]]") To be clear, exec is *not* a function; it's a statement. That means it can't be used in lambda functions, for example. > Wow! So simple! but dodgy, as it'll execute any python code. > Thanks

Re: Determinant of Large Matrix

On Jun 6, 6:47 am, Tommy Nordgren <[EMAIL PROTECTED]> wrote: > On 6 jun 2007, at 13.10, James Stroud wrote: > > > > > Hello All, > > > I'm using numpy to calculate determinants of matrices that look like > > this (13x13): > > > [[ 0. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1. 1.] > > [ 1.

Re: function in a function accessing vars

On Jun 6, 6:40 am, "Jorgen Bodde" <[EMAIL PROTECTED]> wrote: > Hi Diez, > > Thanks, I thought it worked similar to C++ where a higher compound > could access a lower section. It can 'access a lower section'; what it can't do is *change* that 'lower section'; in your example case with an int, this

Re: Python Pop Quiz

On Jun 1, 9:33 pm, [EMAIL PROTECTED] wrote: > 1. Do you like Python? yes > 2. Do you think Python is good? yes > 3. Do you think Python is real good? yes > 4. What is your favorite version of Python? The most recent one. > 5. Because of Python, do you think it will be easier to take over th

Re: c[:]()

On May 30, 5:37 pm, "Warren Stringer" <[EMAIL PROTECTED]> wrote: > Hey many thanks for the replies! > > Ah, so is seems that c[:][:][:][:][:][:][:][:][:][:][:][0]() > also work ... > > Ah well, can't have everything. Guess I was inspired by the alphabetically > adjacent message "Call for Ruby Champ

Re: NEWBIE: Extending a For Statement.

On May 21, 9:21 am, mosscliffe <[EMAIL PROTECTED]> wrote: > On 21 May, 15:02, [EMAIL PROTECTED] wrote: > > > mosscliffe: > > > > if key in xrange (60,69) or key == 3: > > > I keep seeing again and again code like this, mostly from people not > > much expert of Python, but the PEP 260 shows the fast

Re: NEWBIE: Extending a For Statement.

On May 21, 7:22 am, Jean-Paul Calderone <[EMAIL PROTECTED]> wrote: > On 21 May 2007 05:10:46 -0700, mosscliffe <[EMAIL PROTECTED]> wrote: > > > > >I keep seeing examples of statements where it seems conditionals are > >appended to a for statement, but I do not understand them. > > >I would like to

Re: NEWBIE: Extending a For Statement.

On May 21, 7:22 am, Jean-Paul Calderone <[EMAIL PROTECTED]> wrote: > On 21 May 2007 05:10:46 -0700, mosscliffe <[EMAIL PROTECTED]> wrote: > > > > >I keep seeing examples of statements where it seems conditionals are > >appended to a for statement, but I do not understand them. > > >I would like to

Re: converting strings to most their efficient types '1' --> 1, 'A' ---> 'A', '1.2'---> 1.2

On May 18, 6:07 pm, py_genetic <[EMAIL PROTECTED]> wrote: > Hello, > > I'm importing large text files of data using csv. I would like to add > some more auto sensing abilities. I'm considing sampling the data > file and doing some fuzzy logic scoring on the attributes (colls in a > data base/ csv

Re: try

On May 16, 4:22 pm, Robert Kern <[EMAIL PROTECTED]> wrote: > HMS Surprise wrote: > > I read in the ref man that try-except-finally did not work in earlier > > versions, I am using jython 2.2. Does this imply that try-except > > without finally does not work either? I get a syntax error on the else

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