python解析web网站访问日志

使用正则解析web网站访问日志

import re
import datetime


logline='''192.168.149.133 -- [19/Feb/2020:10:12:56 +0800] "GET /www.baidu.com/zhidao?cmpid=3 HTTP/1.1" 200 16691 "-" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.81 Safari/537.36 SE 2.X MetaSr 1.0"'''

pattern='''(?P(\d+\.){3}\d+) -- \[(?P[^\[\]]+)\] "(?P\w+) (?P\S+) (?P[\w/\d.]+)" (?P\d+) (?P\d+) "(?P[^"]+)" "(?P[^"]+)'''


ops={ 
     'time':lambda timestr:datetime.datetime.strptime(timestr,'%d/%b/%Y:%H:%M:%S %z').strftime("%Y-%m-%d %H:%M:%S"),
     'status':int,
     'length':int
     }


regex=re.compile(pattern)


def extract(line):
    matcher=regex.match(line)
    info={k:ops.get(k,lambda x:x)(v) for k,v in matcher.groupdict().items()}
    return info

result=extract(logline)
print(result)