python matches函数_python difflib.get_close_matches（）函数是如何工作的？

但是为了比较IPs，我建议使用整数比较：>>> parts = [int(s) for s in '198.124.252.130'.split('.')]

>>> parts2 = [int(s) for s in '198.124.252.101'.split('.')]

>>> from operator import sub

>>> diff = sum(d * 10**(3-pos) for pos,d in enumerate(map(sub, parts, parts2)))

>>> diff

29

可以使用此样式创建比较函数：from functools import partial

from operator import sub

def compare_ips(base, ip1, ip2):

base = [int(s) for s in base.split('.')]

parts1 = (int(s) for s in ip1.split('.'))

parts2 = (int(s) for s in ip2.split('.'))

test1 = sum(abs(d * 10**(3-pos)) for pos,d in enumerate(map(sub, base, parts1)))

test2 = sum(abs(d * 10**(3-pos)) for pos,d in enumerate(map(sub, base, parts2)))

return cmp(test1, test2)

base = '198.124.252.101'

test_list = ['198.124.252.102','134.55.41.41','134.55.219.121',

'134.55.219.137','134.55.220.45', '198.124.252.130']

sorted(test_list, cmp=partial(compare_ips, base))

# yields:

# ['198.124.252.102', '198.124.252.130', '134.55.219.121', '134.55.219.137',

# '134.55.220.45', '134.55.41.41']