Can somebody explain the output of the code below?

Question

def at(func, arg) :
return func(func(arg))
def af(x):
return x + 5
print(at (af, 10))

Answer 1

Does this help?

at(af, 10)
af(af(10))
af(10 + 5)
af(15)
15 + 5
20

Answer 2

Thanks Igor.

Answer 3

😊