List operations

In this section, you will learn slicing, accessing, adding, deleting, and updating the values in a list.

Accessing list values

In order to access list values, use list names with positional index in square brackets. For example, consider the following code snippet:

>>> Avengers = ['hulk', 'iron-man', 'Captain', 'Thor']

>>> Avengers[0]

'hulk'

>>> Avengers[3]

'Thor'

>>> Avengers[-1]

'Thor'

>>> Avengers[4]

Traceback (most recent call last):

  File "<pyshell#5>", line 1, in <module>

    Avengers[4]

IndexError: list index out of range

If the desired index is not found in the list, then the interpreter throws IndexError.

Slicing the list

The slicing of a list is the same as we did in tuples. See the syntax:

<list-name>[start : stop : step]

See the example:

>>> Avengers[1:3]

['iron-man', 'Captain']

>>> Avengers[:4]

['hulk', 'iron-man', 'Captain', 'Thor']

>>> Avengers[:]

['hulk', 'iron...