Nested loops are loops within loops. In Python, this typically means having a for loop or a while loop inside another for or while loop.

Basic Syntax

The basic structure of a nested loop in Python looks like this:

for i in outer_loop_range:
    for j in inner_loop_range:
        # code to execute in inner loop
    # code to execute in outer loop

Points to Remember

1. Indentation : Pay attention to indentation, as it defines the scope of the loops.

2. Loop Variables : Ensure that the inner and outer loops use different loop variables.

3. Complexity : Be aware that nested loops can increase the complexity of your code, especially if there are many levels of nesting.