Simple python utility function for performing base conversions

base_convert.py

import string

corpus = string.digits + string.letters


def base_convert(num, base):
    if base > len(corpus) or base < 2:
        raise Exception('Please pick a base between 2 and %s' % len(corpus))
    quotient, remainder = divmod(abs(num), base)
    return "".join([
            '-' if num < 0 else '',
            base_convert(quotient, base) if quotient else '',
            corpus[remainder],
        ])