"MonkeeSage" <[EMAIL PROTECTED]> writes:
> def to_bin(x):
> out = []
> while x > 0:
> out.insert(0, str(x % 2))
> x = x / 2
> return ''.join(out)
That returns the empty string for x=0. I'm not sure if that's a bug
or a feature.
It also returns the empty string for x < 0, probably a bug.
It will break in Python 3, where 1 / 2 == 0.5.
Here's yet another version:
def to_bin(n):
if n < 0: return '-' + to_bin(-n)
if n==0: return '0'
return ''.join(
("0000", "0001", "0010", "0011",
"0100", "0101", "0110", "0111",
"1000", "1001", "1010", "1011",
"1100", "1101", "1110", "1111",)[int(d,16)] \
for d in '%x'%n).lstrip('0')
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