A **nested loop** is a loop inside the body of the outer loop. The inner or outer loop can be any type, such as a `while` loop or a `for` loop. For example, the outer `for` loop can contain a `while` loop, and vice versa.

First, we will try to print a simple picture with the help of a nested loop.

Use ``end = ' '`` in the print function to print elements in a row. 

# Printing a triangle
# Outer for loop
for i in range(1, 5):
  # Inner for loop
  for j in range(1, i + 1):
    print('*', end=' ')
  print('')

We start learning Python loops with the for loop. A for loop is used for iterating over a sequence. Let's go!

With the while loop, we can execute a set of statements as long as a condition is true. We are going to work with this loop and handle different problems!

A nested loop is a loop inside a loop. Sound difficult? Don't worry! We will handle this loop!