Flag control variable

Tue Feb 11 13:37:45 EST 2014

well i'm trying something else but no luck :
#!bin/bash/python
import sys
import os
a = int(sys.argv[1])
sign = (sys.argv[2])
b = int(sys.argv[3])
if sign == '+':
 sum = a + b
 print a, sign, b, "=", a + b
 command1 = "sudo mpg321 'http://translate.google.com/translate_tts?tl=en&q=%s_plus%s_equals%s'" % (a, b, sum)
 os.system (command1)
elif sign == "*":
 sum = a * b
 print a, sign, b, "=", a * b
 command1 = "sudo mpg321 'http://translate.google.com/translate_tts?tl=en&q=%s_times%s_equals%s'" % (a, b, sum)
when using * i get 
Traceback (most recent call last):
 File "./math+.py", line 6, in <module>
 b = int(sys.argv[3])
ValueError: invalid literal for int() with base 10: 'Adafruit-Raspberry-Pi-Python-Code'
i don't understand why b is a problem, it works fine with +