Understand Nested Loops with Examples

Nested loops in Python: Explained with examples of patterns.

Photo by Joshua Woroniecki on Unsplash

What is a Nested loop?

In the Python programming language, we know that there are mainly two types of loops: for loop and while loop. When we create a for loop and inside the for loop when we create another for or while loop and vice-versa we call it a nested loop. Nested loops are very important when a programmer is dealing with complex problems. We can look at some of the examples of nested loops given below:

Example 1

Example 2

Example 3

Create Certain Patterns Using Nested Loops

Patterns are nothing but a way to express a symbol or something. We will try to create some triangles using a nested loop.

All patterns can be broken down to i and j for better understanding

Pattern 1

Pattern 2

Pattern 3

Pattern 4

Pattern 5

Pattern 6

Pattern 7

Pattern 8

Pattern 9

Pattern 10

Pattern 11

Pattern 12

Pattern 13

Pattern 14

Pattern 15

Pattern 16

Pattern 17

Pattern 18

Pattern 19

Pattern 20

Pattern 21

Pattern 22

Pattern 23

Pattern 24

Pattern 25

Pattern 26

Pattern 27

Pattern 28

Pattern 29

Pattern 30

Pattern 31

Pattern 32

Pattern 33

Pattern 34

There are thousands of patterns that we can create using loops but the understanding of these 34 patterns is what makes the difference. These patterns look easy but if one can create them, they surely have a good understanding of nested loops.

Thank you for reading.

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