> -Original Message-
> From: [EMAIL PROTECTED] [mailto:python-
> [EMAIL PROTECTED] On Behalf Of Ratko
> Sent: Thursday, July 17, 2008 12:27 PM
> To: python-list@python.org
> Subject: properly delete item during "for item in..."
>
> Say you have something like this:
>
> for item in myLis
> > For dictionaries we can just iterate over values() or items() as
> > opposed to itervalues() or iteritems() since that's technically a copy
> > of values or items in the dict, right?
>
> No! In fact the whole point of iteritems and itervalues and iterkeys is
> that they *DO NOT* make copies, s
Ratko wrote:
On Jul 17, 9:57 am, mk <[EMAIL PROTECTED]> wrote:
Gary Herron wrote:
You could remove the object from the list with
del myList[i]
if you knew i. HOWEVER, don't do that while looping through the list!
Changing a list's length will interact badly with the for loop's
indexin
mk <[EMAIL PROTECTED]> wrote:
> Iterating over a copy may _probably_ work:
>
> >>> t=['a', 'c', 'b', 'd']
> >>>
> >>> for el in t[:]:
> del t[t.index(el)]
>
>
> >>> t
> []
>
>
> However, is it really safe? Defining safe as "works reliably in every
> corner case for every indexable
On Jul 17, 9:57 am, mk <[EMAIL PROTECTED]> wrote:
> Gary Herron wrote:
> > You could remove the object from the list with
> > del myList[i]
> > if you knew i. HOWEVER, don't do that while looping through the list!
> > Changing a list's length will interact badly with the for loop's
> > indexing t
Gary Herron wrote:
You could remove the object from the list with
del myList[i]
if you knew i. HOWEVER, don't do that while looping through the list!
Changing a list's length will interact badly with the for loop's
indexing through the list, causing the loop to mis the element following
the
Ratko wrote:
Say you have something like this:
for item in myList:
del item
Would this actually delete the item from the list or just decrement
the reference counter because the item in myList is not associated
with name "item" anymore (but still is with myList[itemIndex])? In
other words, i
On Thu, 17 Jul 2008 09:27:27 -0700, Ratko wrote:
> for item in myList:
>del item
>
> Would this actually delete the item from the list or just decrement
> the reference counter because the item in myList is not associated
> with name "item" anymore (but still is with myList[itemIndex])? In
>
