🌐 Mailman 3 November 2001 - Python-list - python.org

Re: Freeware Python editor
by Erik Max Francis Nov. 1, 2001

Nov. 1, 2001

Oleg Broytmann wrote: > And, BTW, "free to use" is not free in the sense I prefer. I'd > better > read free code. And free code is the code I can read, modify and > distribute. I hope I do not start yet another GNU flame war. :) "Freeware" has a well-defined meaning that predates open source initiatives. The sense it was used in this case was correct, so complaints about _free_ not being defined the way _you_ prefer it are irrelevant. -- Erik Max Francis / max(a)alcyone.com / http://www.alcyone.com/max/ __ San Jose, CA, US / 37 20 N 121 53 W / ICQ16063900 / &tSftDotIotE / \ Laws are silent in time of war. \__/ Cicero Esperanto reference / http://www.alcyone.com/max/lang/esperanto/ An Esperanto reference for English speakers.

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newbie, relative path
by stojek＠part-gmbh.de Nov. 1, 2001

Nov. 1, 2001

Hi, 2 little questions.: 1. I have a small script that uses an .ini file for configuration. How can I open the file config.ini that is in the same dir as the script itself? (script dir is changing) config=open("?????config.ini","r") 2. I am pretty sure that I have read somewhere that it is possible to link the Python Interpreter and everthing together and make a binary executabel (WIN) from the script. I don't find this in "Programming Python" or "Learning Python" any more. Is it possible and where can I find a description? Thanks again. Marcus

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Re: Underscore data hiding (was python development practices?)
by John Roth Nov. 1, 2001

Nov. 1, 2001

"Skip Montanaro" <skip(a)pobox.com> wrote in message news:mailman.1004551677.1783.python-list@python.org... > > Russell> My understanding is that a double underscore is required for > Russell> Python to automagically mangle the name. On the other hand, two > Russell> postings now suggest that a single underscore is sufficient. > > Russell> If double underscore is required, then it seems to me this is a > Russell> very common misconception that a single is sufficient. It might > Russell> be worth changing. > > A double leading underscore is requred to coax Python into mangling an > attribute. I think a lot of people use a single underscore as a simple cue > for themselves and other programmers that an attribute isn't meant to be > part of the public interface without messing up the actual name, so it can > be used easily in subclasses. It also 'hides' the names from a 'from <module> import *' construct. > -- > Skip Montanaro (skip(a)pobox.com) > http://www.mojam.com/ > http://www.musi-cal.com/ >

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Why 'self' ?
by Schaefer, F. Nov. 1, 2001

Nov. 1, 2001

Hi all, It's been a while that I am working with Python and actually the only thing I really do not like about it is 'self' in the member function definitions as argument. If it has to be there anyway, it is totally redundant to write it. So, why is self there ? Thanks, Frank

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Re: Unpacking extension (Re: A small inconsistency in syntax?)
by Bernhard Herzog Nov. 1, 2001

Nov. 1, 2001

James_Althoff(a)i2.com writes: > Greg Ewing wrote: > >What if, instead of just the special built-in constructors > >() and [], you were allowed *any* constructor on the LHS? > > > >Consider: > > > > class Pair: > > def __init__(self, x, y): > > self.x = x > > self.y = y > > def __unpack__(self): > > return x, y > > > > p = Pair(17, 42) > > Pair(a, b) = p What's wrong with e.g. class Pair: def __init__(self, x, y): self.x = x self.y = y def __getitem__(self, index): return (self.x, self.y)[index] p = Pair(17, 42) a, b = p That works today (just tested with 2.1 and 1.5.2). The only thing it doesn't do is checking whether p is an instance of Pair as your proposal would but that's better done with a separate test, anyway, IMO. AFAIK, the "[a,b] = sequence" syntax is a holdover of some old python version (<= 1.4 IIRC) where "a, b = sequence" would only work for tuples and "[a,b] = sequence" only for lists. Personally, I wouldn't mind to see the "[a,b] = sequence" sytax go. Bernhard -- Intevation GmbH http://intevation.de/ Sketch http://sketch.sourceforge.net/ MapIt! http://mapit.de/

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Re: Underscore data hiding (was python development practices?)
by Peter Wang Nov. 1, 2001

Nov. 1, 2001

On Wed, 31 Oct 2001 12:05:11 -0600, Skip Montanaro <skip(a)pobox.com> wrote: > > Russell> My understanding is that a double underscore is required for > Russell> Python to automagically mangle the name. On the other hand, two > Russell> postings now suggest that a single underscore is sufficient. > > Russell> If double underscore is required, then it seems to me this is a > Russell> very common misconception that a single is sufficient. It might > Russell> be worth changing. > >A double leading underscore is requred to coax Python into mangling an >attribute. I think a lot of people use a single underscore as a simple cue >for themselves and other programmers that an attribute isn't meant to be >part of the public interface without messing up the actual name, so it can >be used easily in subclasses. heh... so: C++::private == Python."__*" C++::protected == Python."_[a-zA-Z]*" C++::public == Python."[a-zA-Z]*" ;) -peter

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adding items from a text file to a list
by toflatpy2＠oaktown.org Nov. 1, 2001

Nov. 1, 2001

Hi, Sorry if this is a bit of a no-brainer question... I have a text file with a list of data items. ex: pickle (fruit or veggie?) pickled eggs (just plain strange) seinfeld (funny show) yada yada (yada) What I want to do is add each item in the file to a python list. The thing that is eluding me is how to leave out the comments. I need it to scan in the item, skip anything in parenthsis then proceed to the next line. Thanks for any help! -t

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