Binary numbers
Steve Purcell
stephen_purcell at yahoo.com
Tue Feb 6 18:14:27 CET 2001
Steve Purcell wrote:
> sampe99 at my-deja.com wrote:
> > Does anyone know an easy way to get a list of binary numbers within a
> > certain range in python? E.g for
> > n=1 [0],[1]
> > n=2 [0,0],[0,1],[1,0],[1,1]
> > n=3 [0,0,0],[0,0,1] a.s.o
> >
> > I need this for n<=18...
Or even:
def binary(num):
digits = map(lambda p, n=num: 2**p & n and 1, range(31))
digits.reverse()
try: return digits[digits.index(1):]
except: return [0]
for n in range(18):
print n, '=', binary(n)
--
Steve Purcell, Pythangelist
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"Even snakes are afraid of snakes." -- Steven Wright
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