Why is the word 'func' used here? Can anyone explain me this program.

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))

Answer 1

oh, yes i got it.thank you so much.

Answer 2

It's just a variable that's storing which function you're wanting to use. In this case, you're wanting to use the function add in the do_twice function. Get what I mean? Look at how do_twice is defined as a function. It parameters are func, x, and y. So you feed it which func (in this case it's add), and then the x & y numbers.

If I converted the variable to its value, this is what it looks like in THIS scenario:

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

We decided it would be add in this line:

do_twice(add, a, b)

Hope that helps.

Answer 3

You're more than welcome bro! Best of luck with your learning.