binary to decimal conversion

Joshua Macy amused at webamused.com
Sat Mar 18 22:18:49 CET 2000


Michael Esveldt wrote:
> 
> This morning I wrote a function that takes a binary number as a string
> and converts it to an integer. There must be a way to optimize this
> function, anyone have some tips?
> 
> def btoi(num):
>     output = 0
>     col = range(len(num))
>     col.reverse()
>     for bit in range(len(num)):
>         output = output + pow(2,col[bit])*int(num[bit])
>     return output
> 
> Thanks,
> Michael
> _______________________________________________________________
> dante at oz.net - Michael Esveldt - #FightThePower on Openprojects

  Yes, use string.atoi

 >>> import string
 >>> string.atoi("110", 2)
 6
 >>> string.atoi("110110", 2)
 54

  Joshua



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