For expressiveness, try something like:
def ip2in(dotted_ip_addr):
result = 0
assert dotted_ip_addr.count('.') in (3, 7)
for chunk in dotted_ip_addr.split('.'):
result = (result << 8) + int(chunk)
return result
def inet2ip(ip_number):
assert 0 < ip_number < 1 << 48
bytes = []
while ip_number:
bytes.append(ip_number & 255)
ip_number >>= 8
assert len(bytes) in (4, 6)
return '.'.join(str(n) for n in reversed(bytes))
--Scott David Daniels
scott.dani...@acm.org
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