Python List For Loop

Python List For Loop

Python List is a collection of items. For loop can be used to execute a set of statements for each of the element in the list.

In this tutorial, we will learn how to use For loop to traverse through the elements of a given list.

Syntax of List For Loop

In general, the syntax to iterate over a list using for loop is

for element in list:
    statement(s)

where

• element contains value of the this element in the list. For each iteration, next element in the list is loaded into this variable.
• list is the Python List over which we would like to iterate.
• statement(s) are block are set of statement(s) which execute for each of the element in the list.

Examples

1. Iterate over List using For Loop

In this example, we take a list of strings, and iterate over each string using for loop, and print the string length.

myList = ['pineapple', 'banana', 'watermelon', 'mango']

for element in myList:
    print(len(element))

Output

9
6
10
5

Reference tutorials for the above program

• Python print()
• Python len()

2. Iterate over list of numbers using For loop

In this example, we will take a list of numbers, and iterate over each number using for loop, and in the body of for loop, we will check if the number is even or odd.

myList = [5, 7, 8, 3, 4, 2, 9]

for element in myList:
    if element % 2 == 0:
        print('even')
    else:
        print('odd')

Output

odd
odd
even
odd
even
even
odd

Reference tutorials for the above program

• Python If-Else
• Python print()

Summary

In this tutorial of Python Examples, we learned how to use For Loop to iterate over Python List elements.