Python Lists

What is a List in python

A list is an ordered collection of items. Python uses the square brackets ([]) to indicate a list. A list contains one or more items. Use comma(,) to separate list items.

List items are ordered, changeable, and allow duplicate values. List items are indexed. The first item has index [0].

A list contains any type item like int,float,string,boolean.

Program

colors = ['red', 'green', 'blue']
print(colors)
data = [100,'Delhi',True,20.5]
print(data)

See Output

A list can contains other lists.

Program

coordinates = [[0, 0], [100, 100], [200, 200]]
print(coordinates)

See Output

List Length

len() function is used to get length of list.

Program

colors = ['red', 'green', 'blue']
list_length = len(colors)
print(list_length)

See Output

List data type

type() function is used to get data type of list.

Program

colors = ['red', 'green', 'blue']
list_type = type(colors)
print(list_type)

See Output

Allow Duplicates

List allows duplicate items.

Program

colors = ['red', 'green', 'blue','red', 'green']
print(colors)

See Output

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