Re: What's going on here?

On Monday, May 23, 2016 at 9:47:15 AM UTC+12, DFS wrote: > def splitrange(b,e,g): > sr=[] > for i in range(b,e,g): > bg=i;eg=min(e,bg+g-1) > sr.append((bg,eg)) > return sr To be more in keeping with the Python ethos, I would take out the “-1”. -- http

Re: function with list argument defaulting to [] - what's going on here???

On 14 Apr 2007 20:20:42 -0700, Paddy <[EMAIL PROTECTED]> wrote: > On Apr 15, 3:58 am, Steven D'Aprano > <[EMAIL PROTECTED]> wrote: > > On Sat, 14 Apr 2007 17:33:11 -0800, Troy Melhase wrote: > > > On 4/14/07, Mike <[EMAIL PROTECTED]> wrote: > > >> While trying to write a recursive function involvin

Re: function with list argument defaulting to [] - what's going on here???

Steven D'Aprano <[EMAIL PROTECTED]> wrote: > On Sun, 15 Apr 2007 05:29:01 +0200, BJörn Lindqvist wrote: > > >> This comes up so often that I wonder whether Python should issue a warning > >> when it sees [] or {} as a default argument. > >> > >> > >> What do people think? A misuse or good use of

Re: function with list argument defaulting to [] - what's going on here???

On Sun, 15 Apr 2007 05:29:01 +0200, BJörn Lindqvist wrote: >> This comes up so often that I wonder whether Python should issue a warning >> when it sees [] or {} as a default argument. >> >> >> What do people think? A misuse or good use of warnings? > > I think Python should reevaluate the defaul

Re: function with list argument defaulting to [] - what's going on here???

> This comes up so often that I wonder whether Python should issue a warning > when it sees [] or {} as a default argument. > > > What do people think? A misuse or good use of warnings? I think Python should reevaluate the default values. -- mvh Björn -- http://mail.python.org/mailman/listinfo/

Re: function with list argument defaulting to [] - what's going on here???

On Apr 15, 3:58 am, Steven D'Aprano <[EMAIL PROTECTED]> wrote: > On Sat, 14 Apr 2007 17:33:11 -0800, Troy Melhase wrote: > > On 4/14/07, Mike <[EMAIL PROTECTED]> wrote: > >> While trying to write a recursive function involving lists, I came > >> across some (to me) odd behavior which I don't quite

Re: function with list argument defaulting to [] - what's going on here???

Mike <[EMAIL PROTECTED]> wrote: ... > Why is "r" not being reset to the empty list on subsequent calls? It > seems like it should be reinitialized when not explicitly provided. Alex -- http://mail.python

Re: function with list argument defaulting to [] - what's going on here???

On Sat, 14 Apr 2007 17:33:11 -0800, Troy Melhase wrote: > On 4/14/07, Mike <[EMAIL PROTECTED]> wrote: >> While trying to write a recursive function involving lists, I came >> across some (to me) odd behavior which I don't quite understand. Here's >> a trivial function showing the problem. > > fro

Re: function with list argument defaulting to [] - what's going on here???

Thanks, Troy. I never cease to be amazed at what can be discovered by reading the manual! Mike Troy Melhase wrote: > On 4/14/07, Mike <[EMAIL PROTECTED]> wrote: >> While trying to write a recursive function involving lists, I came >> across some (to me) odd behavior which I don't quite understa

Re: function with list argument defaulting to [] - what's going on here???

On 4/14/07, Mike <[EMAIL PROTECTED]> wrote: > While trying to write a recursive function involving lists, I came > across some (to me) odd behavior which I don't quite understand. Here's > a trivial function showing the problem. from http://docs.python.org/ref/function.html : Default parameter va

function with list argument defaulting to [] - what's going on here???

While trying to write a recursive function involving lists, I came across some (to me) odd behavior which I don't quite understand. Here's a trivial function showing the problem. >>> def f(l, r = []): for itm in l: r.append(itm) print r >>> a = [1,2,3]

Re: What's going on here?

Dale Strickland-Clark wrote: > Thanks for the answers. I am informed but I don't feel enlightened. > > It does strike me as odd that an apparently empty subclass should add extra > function to the base class. > > Not at all obvious. Remember that a class definition is syntax sugar for a direct cal

Re: What's going on here?

Dale Strickland-Clark wrote: > Thanks for the answers. I am informed but I don't feel enlightened. > > It does strike me as odd that an apparently empty subclass should add extra > function to the base class. > > Not at all obvious. Yes. As said, there is missing a __builtin__.Object object i

Re: What's going on here?

Thanks for the answers. I am informed but I don't feel enlightened. It does strike me as odd that an apparently empty subclass should add extra function to the base class. Not at all obvious. -- Dale Strickland-Clark We are recruiting Python programmers. Please see the web site. Riverhall Syst

Re: X class missing in Python :-) - Re: What's going on here?

John Machin wrote: > robert wrote: >> Dale Strickland-Clark wrote: >>> Python 2.4.2 (#1, Oct 13 2006, 17:11:24) >>> [GCC 4.1.0 (SUSE Linux)] on linux2 >>> Type "help", "copyright", "credits" or "license" for more information. >> a = object() >> a >>> >> a.spam = 1 >>> Traceback (most r

Re: X class missing in Python :-) - Re: What's going on here?

robert wrote: > Dale Strickland-Clark wrote: > > Python 2.4.2 (#1, Oct 13 2006, 17:11:24) > > [GCC 4.1.0 (SUSE Linux)] on linux2 > > Type "help", "copyright", "credits" or "license" for more information. > a = object() > a > > > a.spam = 1 > > Traceback (most recent call last): > >

X class missing in Python :-) - Re: What's going on here?

Dale Strickland-Clark wrote: > Python 2.4.2 (#1, Oct 13 2006, 17:11:24) > [GCC 4.1.0 (SUSE Linux)] on linux2 > Type "help", "copyright", "credits" or "license" for more information. a = object() a > a.spam = 1 > Traceback (most recent call last): > File "", line 1, in ? > Attribut

Re: What's going on here?

Perhaps this piece of code might explain the behaviour: >>> class C( object ): ... __slots__ = () ... >>> o = C() >>> o.a = 1 Traceback (most recent call last): File "", line 1, in ? AttributeError: 'C' object has no attribute 'a' object behaves like having an implict __slots__ attrib

Re: What's going on here?

Dale Strickland-Clark wrote: > Why can't I assign to attributes of an instance of object? it doesn't have any attribute storage. -- http://mail.python.org/mailman/listinfo/python-list

Re: What's going on here?

> What is subclassing adding to the class here? A __dict__: >>> o = object() >>> dir(o) ['__class__', '__delattr__', '__doc__', '__getattribute__', '__hash__', '__init__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__str__'] >>> class C(object): pass ... >>> c = C() >>

Re: What's going on here?

Dale Strickland-Clark wrote: > Python 2.4.2 (#1, Oct 13 2006, 17:11:24) a = object() a.spam = 1 > Traceback (most recent call last): > File "", line 1, in ? > AttributeError: 'object' object has no attribute 'spam' class B(object): pass a = B() a.spam = 1 > > What i

What's going on here?

Python 2.4.2 (#1, Oct 13 2006, 17:11:24) [GCC 4.1.0 (SUSE Linux)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> a = object() >>> a >>> a.spam = 1 Traceback (most recent call last): File "", line 1, in ? AttributeError: 'object' object has no attribute 'spam

Re: what's going on here?

John Salerno schreef: > But thank god I'm passed this problem, although I'm sure it only gets > worse now! Yes, I'm afraid it does. I got stuck at puzzle 27 and gave up temporarily. I'm going to try again though when I feel I need a challenge :) -- If I have been able to see further, it was on

Re: what's going on here?

John Salerno wrote: > Ant wrote: >> You are along the right lines. Try printing out the content of each URL >> - one of the pages will match your expression, but has additional >> instructions... I think you are reaching the end of their false trail >> when you get None returned from the url. > >

Re: what's going on here?

Ant wrote: > You are along the right lines. Try printing out the content of each URL > - one of the pages will match your expression, but has additional > instructions... I think you are reaching the end of their false trail > when you get None returned from the url. But the weird thing is that wh

Re: what's going on here?

You are along the right lines. Try printing out the content of each URL - one of the pages will match your expression, but has additional instructions... I think you are reaching the end of their false trail when you get None returned from the url. The set of pages themselves are the linked list -

Re: what's going on here?

John Salerno wrote: > Ok, long story Ok, I guess I should have used a better title for the thread. I hope someone still sees this post! :) -- http://mail.python.org/mailman/listinfo/python-list

what's going on here?

Ok, long story: I'm trying to solve level 4 of the Python Challenge. I hate to post here, but the hint forum over there is dead. Here's the link: http://www.pythonchallenge.com/pc/def/linkedlist.php Apparently you need to use a linked list to solve it, so I read up on them but I still don't und

Re: what's going on here?

Felipe Almeida Lessa wrote: > # Suppose line is "200412 34.235.233.2" > # for our comments > > # Creates a list, like ["2004", "12", "34.2", "35.2", "33.2"] > splitted = line.split() Thanks guys! I think what I forgot was that split() returns a list, so that's when the 'rows'

Re: what's going on here?

Em Qui, 2006-03-16 às 16:31 +, John Salerno escreveu: > So finally here's my question: If you are using data.append(), doesn't > that just put all the numbers into one long list? How are the tuples > still being created in this case so that the list comprehensions still > work? It seems like

Re: what's going on here?

[...] > So finally here's my question: If you are using data.append(), doesn't > that just put all the numbers into one long list? no, append appends extend does what you think How are the tuples > still being created in this case so that the list comprehensions still > work? It seems like th

what's going on here?

This might be confusing to explain, because it's a question about an example in Beginning Python and I'll try to provide all the info I can. First off, I'm reading a chapter on using the ReportLab modules to create a line graph from a set of data. The first implementation of the program uses a

Re: mod_python: what's going on here?

Robert J. Hansen a écrit : > Does anyone have any experience with mod_python on OS X/Apache > environments? Can anyone shed some light on 500s that don't leave > traces in the error logs, or what precise incantation I need to make > mod_python start serving up scripts? Here is a setup that

Re: mod_python: what's going on here?

Robert J. Hansen wrote: > I'm not entirely certain comp.lang.python is the proper newsgroup for > mod_python questions, but "comp.lang.python.web" doesn't seem to exist, > so... my apologies in advance if this is considered off-topic. > > I'm attempting to get mod_python 3.1.4/python 2.4.1 working

mod_python: what's going on here?

I'm not entirely certain comp.lang.python is the proper newsgroup for mod_python questions, but "comp.lang.python.web" doesn't seem to exist, so... my apologies in advance if this is considered off-topic. I'm attempting to get mod_python 3.1.4/python 2.4.1 working on Apache 2.0.54 running under OS