Newbie question about list method remove
 

Why is this:

>>> li2 =['this.txt', 'that.txt', 'April04', 'more.txt']
>>> for item in li2:
if ".txt" in item:
li2.remove("%s" %item)
>>> li2
['that.txt', 'April04']

I would think that 'that.txt' would be removed as well. Where am I wrong?

TIA

Re: Newbie question about list method remove
 

Try this,

> >>> li2 =['this.txt', 'that.txt', 'April04', 'more.txt']
> >>> for item in li2[:]: #Make a copy of the list
> if ".txt" in item:
> li2.remove("%s" %item)
> >>> li2
> ['that.txt', 'April04']

Mike

"Sean Berry" <sean_berry@cox.net> wrote in message
news:myemc.69648$Jy3.5301@fed1read03...
> Why is this:
>
> >>> li2 =['this.txt', 'that.txt', 'April04', 'more.txt']
> >>> for item in li2:
> if ".txt" in item:
> li2.remove("%s" %item)
> >>> li2
> ['that.txt', 'April04']
>
> I would think that 'that.txt' would be removed as well. Where am I wrong?
>
> TIA
>
>

Re: Newbie question about list method remove
 

In Python you must think "differently" than in
other programming languages.

li2=[f for f in li2 if not f.endswith('.txt')]

for your specific example or in Python 2.2 and earlier

li2=[f for f in li2 if f.count('.txt') == 0]

for the more general .txt ANYWHERE in the string

or in Python 2.3

li2=[f for f in li2 if not '.txt' in f]


Larry Bates
Syscon, Inc.

"Sean Berry" <sean_berry@cox.net> wrote in message
news:myemc.69648$Jy3.5301@fed1read03...
> Why is this:
>
> >>> li2 =['this.txt', 'that.txt', 'April04', 'more.txt']
> >>> for item in li2:
> if ".txt" in item:
> li2.remove("%s" %item)
> >>> li2
> ['that.txt', 'April04']
>
> I would think that 'that.txt' would be removed as well. Where am I wrong?
>
> TIA
>
>