David R. Smith drs at alex2.labs.agilent.com
Fri Nov 30 14:01:39 EST 2001

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int(string, 2) converts the string to the internal representation.  You
told it that the string was base-2, e.g., '101'.  '5' is not a valid
digit in binary.

Stephen Boulet wrote:
> 
> I'm trying to convert integers to base 2. Can someone tell me why this
> doesn't work?
> 
> >>> int('5', 2)
> Traceback (most recent call last):
>   File "<pyshell#102>", line 1, in ?
>     int('5', 2)
> ValueError: invalid literal for int(): 5
> 
> Thanks.
> 
> -- Stephen

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