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thepacketgeek/calc_mask_length.py

Created July 24, 2015 15:19
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Convert Subnet Mask to CIDR length
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calc_mask_length.py
def calc_mask_length(mask):
""" Convert subnet mask (255.255.255.0) to CIDR mask length (/24) """
return sum([bin(int(x)).count('1') for x in mask.split('.')])
print calc_mask_length('255.255.255.0')
# 24
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