Deleting multiple indexes from a list at once - python

You can remove them with a list comprehension, which will create a new list:

>>> lst = [2, 5, 7, 12, 13]
>>> [v for i, v in enumerate(lst) if i not in {4,3}]
[2, 5, 7]

You just have to assign this new list to lst again.

You can use a list comprehension to rebuild the list:

indices = {3, 4}
newlist = [v for i, v in enumerate(oldlist) if i not in indices]

I used a set for the indices here, as set membership testing is faster than with a list.

Note that a delete (best done with del lst[index]) partially rebuilds the list as well; doing so with one loop in a list comprehension can be more efficient.

Demo:

>>> oldlist = [2, 5, 7, 12, 13]
>>> indices = {3, 4}
>>> [v for i, v in enumerate(oldlist) if i not in indices]
[2, 5, 7]