With the programme run,finally it will become 0,why if it is 23,it will output false?

Answer 1

def is_even(x):
if x == 0:
return True
else:
return is_odd(x-1)

def is_odd(x):
return not is_even(x)

print(is_odd(17))
print(is_even(23))

Answer 2

Thank you very much