Nested Loops

In Python, nested loops refer to the use of one or more loops inside another loop. This technique is commonly used when you need to iterate over a collection of items that contain other collections or nested elements.

The syntax for nested loops is simply to include one or more loops inside another loop. Here’s an example of a nested for loop in Python:

for i in range(3):
    for j in range(2):
        print(i, j)

In this example, there are two loops: the outer loop iterates over a range of numbers from 0 to 2, while the inner loop iterates over a range of numbers from 0 to 1. The print statement inside the inner loop prints both i and j on each iteration.

The output of this code will be:

0 0
0 1
1 0
1 1
2 0
2 1

This means that the inner loop iterates twice for each value of i in the outer loop. This results in a total of 6 print statements.

You can use nested loops with other control statements like if statements, while loops, and break or continue statements. Just make sure that the syntax is correct and that your logic is sound to avoid any unintended consequences.

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