How to Run a Block of Code in Python

In this example we will show how to run a block of code once when the condition of the while loop is not true in Python.

Source Code

a = 3
while a < 20:
    print("'a' is less than 20, it is: ", a)
    a += 4
else:
    print("'a' is no longer less than 20")

Output:

'a' is less than 20, it is:  3
'a' is less than 20, it is:  7
'a' is less than 20, it is:  11
'a' is less than 20, it is:  15
'a' is less than 20, it is:  19
'a' is no longer less than 20