why is this repeated multiple times everywhere?

Question

def add(x, y):
return x + y

def do_twice(func, x, y):
return func(func(x, y), func(x, y))

a = 5
b = 10

print(do_twice(add, a, b))

Here, why do I have to keep writing 'func' everywhere and what is its' purpose? This is the one thing I'm not getting at all. Can anyone explain in detail?

Answer 1

Check this cool piece by AJ Anant out:

https://code.sololearn.com/cgfonDJu8pH0/?ref=app

Answer 2

func is just a parameter name like x and y ,you could use just any other name ,it doesn't matter ,func makes it kinda intuitive that a function is going to be passed to this parameter ,
it has no other purpose other than being a function parameter,you could even name it a or b or whatever ,