Confusion in recursion program of python

Hey guys can anyone explain that output to me?

Don’t get why its counting down again.

def kaboom(i):
    print("first Print: ", i)
    if i < 3:
        kaboom(i+1)
    print("second Print: ", i)

OUTPUT:

first Print:  1
first Print:  2
first Print:  3
second Print:  3
second Print:  2
second Print:  1

Answer

To understand this you need to understand how recursion works. It works on the concept of stacks. You can have a look at the following link, to get a clear understanding : https://www.freecodecamp.org/news/how-recursion-works-explained-with-flowcharts-and-a-video-de61f40cb7f9/

You are calling the same function again if i<3, so it’s printing first print and so on.. but after it’s returned, the execution won’t end there right. It has to execute rest of the method, which is second print.