What are some examples of nested loops in Python?

What are some examples of nested loops in Python?

Nested loops in Python are loops inside another loop. For example, you can use a for loop inside another for loop to iterate over a matrix.

Can you show me a code example?

Sure! Here's a simple example:

for i in range(3):
    for j in range(2):
        print(f'i: {i}, j: {j}')

This will print pairs of i and j values.

What if I want to create a multiplication table?

You can use nested loops like this:

for i in range(1, 11):
    for j in range(1, 11):
        print(i * j, end=' ')
    print()  # New line after each row

Thanks! Are there any performance considerations with nested loops?

Yes, nested loops can lead to performance issues, especially with large datasets, as their time complexity is multiplicative. It's important to optimize when possible.