How to Remove an Element From a List by Index in Python

Using del Keyword

There is a way to remove an item from a list given its index instead of its value. For example,

#!/usr/bin/python3
# -*- coding: utf8 -*-

l = [1, 2, 3, 4]
del l[-1]
print(l)

# supports slices:
del l[1:3]
print(l)

[1, 2, 3]
[1]

del can also be used to delete entire variables.

Using pop Method

By default, pop without any arguments removes the last item:

#!/usr/bin/python3
# -*- coding: utf8 -*-

l = [1, 2, 3, 4]
l.pop()
print(l)

[1, 2, 3]

Using slices Operator

This does not do in place removal of item from original list.

For example,

#!/usr/bin/python3
# -*- coding: utf8 -*-

l = [1, 2, 3, 4]

# Only positive index 
i = 2
l = l[:i]+l[i+1:]
print(l)

[1, 2, 4]

Please note that this method does not modify the list in place like pop and del. It instead makes two copies of lists and one after the index till the last element and creates a new list object by adding both.