python tcp每秒请求并发数

from collections import Counter
import sys

logfile = sys.argv
def  Concurrent(filepath):
    timelist = []

    with open(filepath) as f:
        line = f.readlines()
        for i in line:
            timetmp = i.split(" ")
            if len(timetmp) > 2:
                timelist.append(((timetmp[3]).split("/"))[2])
                count = dict(Counter(timelist))
    output = sys.stdout
    with open(‘/var/openresty/nginx/logs/concurrent.txt‘, ‘a+‘) as f:
        sys.stdout = f
        for key, value in sorted(count.items()):
            print(key, value)

    sys.stdout = output
    print("success!please check file concurrent.txt!!")

Concurrent(logfile)