Why are these numbers repeating 20 times?

Question

def multi(a,b):
return a*b
def t(z,a,b):
return z(z(a,b),(a,b))
c=4
d=5
print(t(multi,c,d))

Output==

(4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5, 4, 5)

Answer 1

because you provide result of z(a,b) as first argument of outer z() call, and (a,b) tuple as second argument, so final result is tuple*20

Answer 2

You passed in a tuple (a, b) the tuple is multiplied by a*b. So
-> 4 * 5 = 20
-> 20 * (4, 5) = (4, 5....)

Answer 3

Instead use return z(z(a, b), z(a, b))

Answer 4

Great Explanation ... Abir Hassan :)