def max_num_compare(n1, n2):
if n1 > n2:
return n1
else:
return n2
def max_num(n1, n2, n3):
m = max_num_compare(n1, n2)
if m > n3:
return m
else:
return n3
if __name__ == "__main__":
maxNumber = max_num(1, 2, 3)
print(maxNumber)