大约有 47,000 项符合查询结果（耗时：0.0545秒） [XML]
Is there a way to 'uniq' by column?
...imiter
-k1,1 for the key field 1
Test result:
overflow@domain2.com,2009-11-27 00:58:29.793000000,xx3.net,255.255.255.0
stack2@domain.com,2009-11-27 01:05:47.893000000,xx2.net,127.0.0.1
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import statistics
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On older versions of Python you can do
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