Tuvas wrote:
[...]
> As to the s2num(text), well, that looks really neat. Is there an easy
> way to do the reverse of that? Thanks!
Easy? Well, you be the judge:
def num2string(n):
""" Pass a non-negative int or long n.
Returns a string with bytes holding the big-endian base-256
representation of n. Zero is represented by the empty string.
"""
h = hex(n).lstrip('0x').rstrip('Ll')
if len(h) % 2:
h = '0' + h
return unhexlify(h)
I did a little testing:
for i in xrange(300):
assert s2num(num2string(i)) == i
for i in xrange(1, 20):
for _ in xrange(100):
r = os.urandom(i)
assert num2string(s2num(r)) == r.lstrip(chr(0))
--
--Bryan
--
http://mail.python.org/mailman/listinfo/python-list
