[Solved] Why Does This Python Function Print Twice?

Let’s split your code…

Part1: create function do_twice(f), that will run f() two times.

def do_twice(f):
    f()
    f()

Part2: create a function called print_spam() that will print() the word "spam"

def print_spam():
    print('spam')

Part3: call the function print_spam() inside the do_twice() funtion

do_twice(print_spam)

This way, your code will ‘think’ something like this:

“Oh he called do_twice(print_spam)! Now I must run print_spam() two times, since print_spam() replaces the f() role.”