[Tutor] calculator will not multiply

[David]

Everything else works + - / but not *
why?
thanks
-david


#!/usr/bin/python
from __future__ import division
import sys


def add(x, y):
     return x + y
def sub(x, y):
     return x - y
def dev(x, y):
     return x / y
def mul(x, y):
     return x * y
def compute(arg1, arg2, arg3):
     if sys.argv[2] == "+":
         total = add(int(sys.argv[1]), int(sys.argv[3]))
         print total
     elif sys.argv[2] == "-":
         total = sub(int(sys.argv[1]), int(sys.argv[3]))
         print total
     elif sys.argv[2] == "/":
         total = dev(int(sys.argv[1]), int(sys.argv[3]))
         print total
     elif sys.argv[2] == "*":
         total = mul(int(sys.argv[1]), int(sys.argv[3]))
         print total
     else:
         print "oops"

compute(sys.argv[1], sys.argv[2], sys.argv[3])


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