python allows conversions from string to integer using any base in the range [2,36] using:
int(string,base)
im looking for an elegant inverse function that takes an integer and a base and returns a string
for example
>>> str_base(224,15)
'ee'
i have the following solution:
def digit_to_char(digit):
if digit < 10: return chr(ord('0') + digit)
else: return chr(ord('a') + digit - 10)
def str_base(number,base):
if number < 0:
return '-' + str_base(-number,base)
else:
(d,m) = divmod(number,base)
if d:
return str_base(d,base) + digit_to_char(m)
else:
return digit_to_char(m)
note: digit_to_char() works for bases <= 169 arbitrarily using ascii characters after 'z' as digits for bases above 36
is there a python builtin, library function, or a more elegant inverse function of int(string,base) ?
