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Flag control variable

luke.geelen at gmail.com writes:

> when using python script.py 2 \* 2
> i get 
> Traceback (most recent call last):
>   File "math2.py", line 5, in <module>
>     sign = int(sys.argv[2])
> ValueError: invalid literal for int() with base 10: '*'

You've mis-spelt sigh.

This is not the code that you posted.

You misunderestimate that error message. It tells everything.