Re: Extending Python by Adding Keywords Data types

in functions and classes/methods? Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: making a variable available in a function from decorator

): kwargs['spam'] = eggs func(*args, **kwargs) return decorated @deco def test(parrot, spam): print parrot, spam Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Hex editor display - can this be more pythonic?

On Sun, 29 Jul 2007 18:27:25 -0700, CC wrote: Marc 'BlackJack' Rintsch wrote: I'd use `string.printable` and remove the invisible characters like '\n' or '\t'. What is `string.printable` ? There is no printable method to strings, though I had hoped there would be. I don't yet know how

Re: How to write GUI and event separately in wxPython??

, callback=lambda msg: None): callback('Start processing.') for percent in xrange(0, 101): callback('finished %d%%...' % percent) callback('Done.') Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: TypeError: unsupported operand type(s) for -: 'Decimal' and 'Decimal'. Why?

'exceptions.TypeError': unsupported operand type(s) for -: 'Decimal' and 'Decimal' Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: How to write GUI and event separately in wxPython??

On Mon, 30 Jul 2007 06:32:55 -0400, Steve Holden wrote: [x for x in xrange(0, 101)] == [y for y in xrange(101)] True First I thought: Why the unnecessary list comprehension but to my surprise: In [33]: xrange(42) == xrange(42) Out[33]: False That's strange. Ciao, Marc 'BlackJack

Re: How to write GUI and event separately in wxPython??

On Mon, 30 Jul 2007 11:16:01 -0400, Steve Holden wrote: Marc 'BlackJack' Rintsch wrote: First I thought: Why the unnecessary list comprehension but to my surprise: In [33]: xrange(42) == xrange(42) Out[33]: False That's strange. Not so strange really. The two xrange objects

Re: Hex editor display - can this be more pythonic?

in parens., while non-printing chars with no escapes will be shown with nothing in parens. For escaping: In [90]: '\n'.encode('string-escape') Out[90]: '\\n' Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: C API -- Two questions

the argument into a tuple if you *really* need a tuple, or just use it as sequence or via iterator. And pay attention to errors of course. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Any reason why cStringIO in 2.5 behaves different from 2.4?

` objects. `unicode` is already decoded. If you want to feed `unicode` objects to an XML parser, simply encode it before passing it. The question remains why you have serialized XML as `unicode` in the first place as it is about bytes not unicode characters. Ciao, Marc 'BlackJack' Rintsch

Re: Filtering content of a text file

you can use `itertools.groupby()` to get the groups and write them to several files. Otherwise if the files can be read into memory completely you can sort in memory and then use `itertools.groupby()`. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Filtering content of a text file

On Fri, 27 Jul 2007 12:15:25 +0200, Bruno Desthuilliers wrote: 4/ print //-+alibaba sinage[4:].startswith('a') print //-+alibaba sinage.startswith('a', 4) This does not create an extra string from the slicing. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo

Re: 128 or 96 bit integer types?

by available memory. In [59]: 2**128 Out[59]: 340282366920938463463374607431768211456L Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Removing certain tags from html files

of a given regular expression, would it be a good idea? No regular expressions are not a very good idea. They get very complicated very quickly while often still miss some corner cases. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: is_iterable function.

'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Flatten a list/tuple and Call a function with tuples

'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: is_iterable function.

actually iterate over the object. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: is_iterable function.

On Wed, 25 Jul 2007 15:46:14 -0400, Carsten Haese wrote: On Wed, 2007-07-25 at 19:11 +, Marc 'BlackJack' Rintsch wrote: And just calling `iter()` doesn't work either: In [72]: class A: : def __getitem__(self, key): : if key == 42: : return

Re: From D

On Wed, 25 Jul 2007 10:47:33 -0700, Paddy wrote: But then,what would _0 be, the number 0 or the name _0 analagous to a0 Of course the name because numbers have to start with a digit or a dot. Otherwise this would break backwards compatibility. Ciao, Marc 'BlackJack' Rintsch -- http

Re: classmethod staticmethod

') Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Parsing XML with ElementTree (unicode problem?)

should stop searching the explanation within Python or `ElementTree` and accept having a broken XML file on your disk. :-) Have you checked the local XML file with something like `xmllint` or another XML parser already? Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman

Re: display image through cgi python html

and print it. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Python pearls required for iteration across fields of data structure

On Tue, 24 Jul 2007 02:26:15 -0700, NetHead wrote: The code below is WRONG, but hopefully illustrates what I am trying to achieve. Any suggestions how to code this is an efficient and maintainable (and correct) manner? […] for i in wildcards: for j in i: try:

Re: simpleJSON pack binary data

somehow. I'd use base64. It's available as codec for `str.encode()`/`str.decode()`. In [10]: '\x00\xff\xaa' Out[10]: '\x00\xff\xaa' In [11]: '\x00\xff\xaa'.encode('base64') Out[11]: 'AP+q\n' In [12]: _.decode('base64') Out[12]: '\x00\xff\xaa' Ciao, Marc 'BlackJack' Rintsch -- http

Re: Pythonic way for missing dict keys

()) Reduces the unnecessary instantiation of `myobject` to false objects. May be not good enough. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Copy List

of course. ;-) In [6]: import copy In [7]: a = [[1, 2], [3, 4]] In [8]: b = a[:] In [9]: c = copy.deepcopy(a) In [10]: a[0][1] = 42 In [11]: a Out[11]: [[1, 42], [3, 4]] In [12]: b Out[12]: [[1, 42], [3, 4]] In [13]: c Out[13]: [[1, 2], [3, 4]] Ciao, Marc 'BlackJack' Rintsch -- http

Re: Best method for inter process communications

',)) In [10]: len(a) Out[10]: 80 In [11]: print a params param valuestringhello world/string/value /param /params Even with some additional boilerplate like XML declaration etc. there is still a little bit room until 10 kB are reached. :-) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org

Re: Getting values out of a CSV

'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: PEP 3107 and stronger typing (note: probably a newbie question)

optimizations. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Can a low-level programmer learn OOP?

with so much machine details, don't have to manage memory, don't need extra indexes for looping over lists and so on. And the crashes are much gentler, telling me what the error is and where instead of a simple segfault or totally messed up results. Ciao, Marc 'BlackJack' Rintsch -- http

Re: storing pickles in sql data base

to write and read the text files in binary mode or they break if taken across platform boundaries because of the different line endings in Linux and Windows for instance. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Simple search and Display system, no need for db?

, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: concatenate file-like objects - file-like object

: data = self.current_file.read(size) result += data if len(data) != size: self.current_file = self.files.pop() size = size - len(data) return result Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python

Re: bool behavior in Python 3000?

``==`` to do with `cmp()` here? The return of `cmp()` is an integer that cannot and should not be seen as boolean value. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Simple search and Display system, no need for db?

On Wed, 11 Jul 2007 16:52:32 +, flit wrote: That seems to be a good idea, but I am afraid the web hosting does not have the csv modules.. The `csv` module is part of the standard library. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: binascii.unhexlify ... not clear about usage, and output

]: gmpy.digits(a, 2).zfill(16) Out[16]: '000101100100' Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Need Help

' In [11]: a Out[11]: '\x00' In [12]: ord(a) Out[12]: 0 Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Empty text

ElementTree to output the XHTML code I need it to? Then either Firefox is broken or you don't declare your XHTML properly and Firefox thinks it's HTML. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Where is the syntax for the dict() constructor ?!

items: 1: erik 2: viking 3: ham 4: spam and eggs 5: He said Ni! 6: line one 'line two' is the only item in the next record then. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Unicode problem

is a right single quotation mark and not an apostrophe. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Where is the syntax for the dict() constructor ?!

this: erik,viking,ham, spam and eggs,He said Ni!,line one line two That's 5 elements: 1: eric 2: viking 3: ham, spam and eggs 4: He said Ni! 5: line one line two Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Expandable 2D Dictionaries?

. The parenthesis are just necessary for the literal empty tuple and if the syntax would be ambiguous otherwise. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: How would I write this C code in Python?

but unless we know what you are going to do with these data structures it's hard to tell if it is really the best translation. `PF.buffer` might be better a string or an `array.array`. And is `BLOCK` really just a structure with *one* member? Looks a bit odd IMHO. Ciao, Marc 'BlackJack

Re: Repeating Thread Error

while loops? This question doesn't make much sense to me. Do ``while`` loops block other threads? No of course not. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Callback scoping

guessed, I want a list of (no parameter) functions, each of which returns its index in the list.) Default arguments are evaluated when the function is defined: In [15]: x = [lambda x=i: x for i in xrange(10)] In [16]: x[0]() Out[16]: 0 In [17]: x[5]() Out[17]: 5 Ciao, Marc 'BlackJack

Re: what is wrong with that r\

see -- readability is the problem. :-) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: ignoring a part of returned tuples

possible to give a regular expression for names you don't care if they are unused. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Proposal: s1.intersects(s2)

efficiently if the sets intersect without actually *doing* the intersection. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Proposal: s1.intersects(s2)

for item in set_b) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Find This Module

in module? It's built into the interpreter executable. In [85]: import _sre In [86]: _sre Out[86]: module '_sre' (built-in) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: restructuredtext latin1 encoding (FAQ?)

encoding used by your operating system. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: 15 Exercises to Know A Programming Language

if the input comes from a user it's a security hole. `float()` is the function to use here. `mean()` does not work as you try to divide a list by a number. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: python 3.0 or 3000 ....is it worth waiting??? Newbie Question

3000. And this change may be already in a Python 2.x before P3K. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Set builtin lookups

am using a set or are sets represented by a hash table? Sets are implemented as hash tables. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: XML from SQL result

('tag2') writer.end('tag1') writer.end('document') Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Too many 'self' in python.That's a big flaw in this language.

names are local and which are attributes. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: listing all property variables of a class instance

* `__dict__` like Neil does. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Collections of non-arbitrary objects ?

`` is neat too. Something I really miss in everyday programming in Python, not. ;-) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: is this a valid import sequence ?

. It seems a common error from people used to declare variables at that level in other languages. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: SIMD powered Python

objects. `map()`, `reduce()`, list comprehension work on arbitrary iterables so how do you expect SIMD instructions handle this? Even simple lists contain objects and those don't have to be of the same type. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python

Re: SIMD powered Python

In [EMAIL PROTECTED], Bytter wrote: Marc 'BlackJack' Rintsch escreveu: In [EMAIL PROTECTED], Bytter wrote: Is there any ID ongoing about using SIMD [1] instructions, like SSE [2], to speed up Python, especially regarding functional features, like list comprehension, map and reduce, etc

Re: Collections of non-arbitrary objects ?

, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: configparser shuffles all sections ?

'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: comparing two lists and returning position

'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Packing a simple dictionary into a string - extending struct?

'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Rotating a picture

, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: HTMLParser.HTMLParseError: EOF in middle of construct

at that line and ignore the rest. There are 604 (!) errors, some about table rows, before this line. So the parser may be confused at this point and be already in an internal state that sees that line in a completely different light than you do. Ciao, Marc 'BlackJack' Rintsch -- http

Re: BeautifulSoup - extract the object tag

embed src=url quality=highpluginspage=http://www.macromedia.com/go/; getflashplayer=getflashplayer type=application/x-shockwave-flash width=640 height=400 bgcolor=#00 scale=showall /embed /param/object] Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python

Re: suggestion: recursive collections.defaultdict

'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: huge dictionary - bsddb/pickle question

'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

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

that unreadable and magic instead of the perfect readable ``for k, v in some_dict.iteritems():``? And I don't see why it should be ``**``!? Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

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

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 anyway. ;-) a = tuple(xrange(10)) Ciao, Marc 'BlackJack' Rintsch -- http

Re: problem on waiting exit thread and write on file

it!? :-) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Newsgroup query

In [EMAIL PROTECTED], Jeff Rollin wrote: Why do I not see my messages with attached files in the newsgroup, and is there any way to configure this? No, most news servers strip attachments from postings in non-binary groups. It's a plain text medium. Ciao, Marc 'BlackJack' Rintsch

Re: Accessing attributes?

of the code I would say you just have an `__init__()` and all other ``def``\s are local functions to that method. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: A gotcha: Python pain point?

In [EMAIL PROTECTED], Terry Reedy wrote: | Should I import this to see how | many principles this behavior violates? ??? If you meant 'report' (on SF), please do not. I think he meant ``import this`` at the Python interpreter. Ciao, Marc 'BlackJack' Rintsch -- http

Re: a question about unicode in python

interactive, it is right s = u'张三' why? Does the coding comment match the actual encoding of the source file? Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Simple Threading Example Doesn't Work (2.5.1)

`!? Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Postpone creation of attributes until needed

no attribute '__dict__'. That's because you used `__slots__`. One of the drawbacks of `__slots__`. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Third-party libs in version control

to work there. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: interating over single element array

them from a database etc. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Integer division

intent here because it still gives `float` results if used with at least one `float` as operands: In [1]: 10.0 // 2 Out[1]: 5.0 Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: how to do reading of binary files?

data too I guess. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: interating over single element array

() of unsized object any suggestions are appreciated, Yes, don't try iterating over objects that are not iterable. ;-) What you *can* do is iterating over lists, tuples or other iterables with just one element in them. Try ``a = [1]``. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org

Re: Case-Insensitive Sorting of Multi-Dimensional Lists

of course. mylist = ['Fred','bill','PAUL','albert'] mylist.sort(key=lambda el: el.lower()) So this becomes: def keyfunc(el): return el.lower() mylist.sort(key=keyfunc) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: Working with fixed format text db's

, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: running a random function

the function. If you have a function or callable you call it with the call operator, which are parenthesis: In [8]: int Out[8]: type 'int' In [9]: int() Out[9]: 0 For a random selection of an element from a list look at the `random.choice()` function. Ciao, Marc 'BlackJack' Rintsch

Re: c[:]()

In [EMAIL PROTECTED], Steven D'Aprano wrote: Is there a general Pythonic idiom for efficiently walking over part of a sequence without copying it first? Should there be? What about using `itertools.islice()`: for e in islice(a, 4): pass Ciao, Marc 'BlackJack' Rintsch -- http

Re: overriding setting

an optional argument. Just make sure your derived type does to and passes this to the base class `__init__()`. Then you can create an instance like this: a = MyList([[1, 2, 3], [4, 5, 6, 7]]) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: magic names in python

and dynamic nature of Python to the point where the source starts to get unreadable and too magic, AFAIK there's no special pythonic recommendation. :-) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: magic names in python

coding practice. What do you mean by use? Implement them to override behavior? Yes, that's their purpose. Invent new magic names? No of course not, they are special for a reason: preventing name clashes with the user's names. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org

Re: Dict naming, global vs local imports, etc. [was Re: *Naming Conventions*]

only if it's not possible otherwise. But cyclic imports are bad anyway. :-) And if the import is *really* expensive and only needed in some special circumstances. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: int vs long

an exception instead of the surprise. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: magic names in python

In [EMAIL PROTECTED], per9000 wrote: On Jun 4, 9:11 am, Marc 'BlackJack' Rintsch [EMAIL PROTECTED] wrote: In [EMAIL PROTECTED], per9000 wrote: [...] So another question emerges: * is the use of magic names encouraged and/or part of good coding practice. What do you mean by use

Re: int vs long

In [EMAIL PROTECTED], Peter Otten wrote: Marc 'BlackJack' Rintsch wrote: from itertools import count from sys import maxint c = count(maxint) c.next() 2147483647 c.next() -2147483648 What I find most disturbing here, is that it happens silently. I would have expected an exception

Re: int vs long

: /usr/local/lib/python2.4/lib-dynload $ python2.5 Python 2.5 (r25:51908, Oct 3 2006, 08:48:09) [GCC 3.3.3 (SuSE Linux)] on linux2 Seems to be the same Python version, just build three days earlier and with a different GCC version. Weird. Ciao, Marc 'BlackJack' Rintsch -- http

Re: Python, Dutch, English, Chinese, Japanese, etc.

'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: c[:]()

'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: c[:]()

be prevented and abusing a list comprehension or `map()` just for side effects and not for building a list with meaningful content. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

Re: *Naming Conventions*

hand there is the convention to name functions and methods as verbs that are doing something. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list

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