[Tutor] Binary

[Remco Gerlich]

On  0, "Timothy M. Brauch" <tbrauch@mindless.com> wrote:
> Okay, I know hex(x) will display x in hexadecimal and oct(x) will
> display x in octal, but how do I display x in binary?  I've tried
> seraching the python docs, but a search on binary turns up more on
> binary distributions and a search on base turns up stuff about base
> classes.

I like this method. It does keep some leading 0s:

_bindict = {
   '0': '0000',
   '1': '0001',
   '2': '0010',
   '3': '0011',
   '4': '0100',
   '5': '0101',
   '6': '0110',
   '7': '0111',
   '8': '1000',
   '9': '1001',
   'a': '1010',
   'b': '1011',
   'c': '1100',
   'd': '1101',
   'e': '1110',
   'f': '1111'
   }
   

def bin(x):
    import string
    h = hex(x)[2:] # Skip the '0x' bit
    string.join(map(_bindict.get, h), "")