On 9/8/20 5:18 PM, Richard Damon wrote:
> On 9/8/20 7:06 PM, Mats Wichmann wrote:
>> On 9/7/20 5:01 PM, Driuma Nikita wrote:
>> for i, el in enumerate(_list[:]):
>> del _list[i]
>>
> The issue isn't so much that he is modifying the list that he is
> iterating over, but also when he de
On Wed, Sep 9, 2020 at 6:18 PM Nicholas Cole wro
>
> On Wed, Sep 9, 2020 at 8:52 AM Chris Angelico wrote:
>
> [snip]
> > And if you absolutely have to mutate in place:
> >
> > items[:] = [i for i in items if i not in "bcd"]
>
> How does that work to mutate in place?
Technically it constructs a n
On Wed, Sep 9, 2020 at 8:52 AM Chris Angelico wrote:
[snip]
> And if you absolutely have to mutate in place:
>
> items[:] = [i for i in items if i not in "bcd"]
How does that work to mutate in place?
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On Wed, Sep 9, 2020 at 5:45 PM Peter Otten <__pete...@web.de> wrote:
>
> Peter Otten wrote:
>
> > If the list is huge you can also delete in reverse order:
> >
> > for i in reversed(len(_list)):
>
> Make that reversed(range(len(_list))).
>
> > if discard(_list[i]):
> > del _list[i]
>
>
Peter Otten wrote:
> If the list is huge you can also delete in reverse order:
>
> for i in reversed(len(_list)):
Make that reversed(range(len(_list))).
> if discard(_list[i]):
> del _list[i]
Example:
>>> items = ['a', 'b', 'c', 'd', 'e']
>>> for i, item in enumerate(items):
...
Mats Wichmann wrote:
> On 9/7/20 5:01 PM, Driuma Nikita wrote:
>
>
> _list = list(range(50))
> for i, el in enumerate(_list):
> del _list[i]
> print(_list)
>
>
> Don't change the the list while you are iterating over it, it messes up
> the iteration. It's not "randomly
On 9/8/20 7:06 PM, Mats Wichmann wrote:
> On 9/7/20 5:01 PM, Driuma Nikita wrote:
>
>
> _list = list(range(50))
> for i, el in enumerate(_list):
> del _list[i]
> print(_list)
>
>
> Don't change the the list while you are iterating over it, it messes up
> the iteration. It's
On 9/7/20 5:01 PM, Driuma Nikita wrote:
_list = list(range(50))
for i, el in enumerate(_list):
del _list[i]
print(_list)
Don't change the the list while you are iterating over it, it messes up
the iteration. It's not "randomly deleting", it's when next is called to
fetch
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