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07 LIST IN PYTHON
Your Aim
to learn about:
Creating a List Traversing a List
Operations on a List List Methods
Python Functions Slicing the List
Changing the List Element Adding an Element to a List
Some More Programs
A list can be defined as a sequence of objects arranged in an organised form. In a list, each
element or value is called an item. List is mutable, which means the items in a list can be modified
by assigning new values. It can be either homogeneous or heterogenous which means a list can
contain numeric as well as character data. In this chapter, you will learn about creating a list,
operations performed on the list and functions of the list.
CREATING A LIST
To create a list you need to place all the elements separated by a comma inside a square bracket
[ ]. The list can contain any number of elements of different data types such as integer, float,
character and so on.
A list which contains another list in it is called as nested list.
Syntax to create a list:
<list_name> = [value1, value 2, value 3, ...]
Examples:
To create list of 4 integer elements: L1 = [1, 2, 3, 4]
To create list of 3 strings: L1 = ["Nikhil", "Dikshant", "Jatin"]
To create list of integer and float numbers: L1 = [1, 1.5, 2.5, 7]
To create list of characters: L1 = ['a', 'b', 'c']
To create empty list: L1 = []
To create nested list: L1 = ['Orange', 2.0, 5, [10,20]]
To create list with mixed data types: L1 = [7, "Hello", 3.14]
78 Touchpad MODULAR (Version 2.0)

