python：字符转换时间，时间相减

参考

https://blog.csdn.net/weixin_40012554/article/details/108757642

实例

可以实现时间戳直接相减的函数与类型是这个：

b=datetime.strptime(‘12:11:06.178272’,‘%H:%M:%S.%f’) ### %f是微秒
a=datetime.strptime(‘12:11:06.168272’,‘%H:%M:%S.%f’)
b-a
datetime.timedelta(0, 0, 10000)
print(b-a)
0:00:00.010000

code

import sys
import os
import datetime as dt

#for aFile in filelist:
f_trace = open(sys.argv[1],'r')

a=dt.datetime.strptime('0:0:0.000000','%H:%M:%S.%f')
b=dt.datetime.strptime('0:0:0.060000','%H:%M:%S.%f')
time=dt.datetime.strptime('0:0:0.178272','%H:%M:%S.%f')
for line in f_trace:
        #f_message.write(line);
        #if len(line)!=1: ###if the line is empty
        if line.find("fa:16:3e:f1:a3:42")>-1:
            time1=dt.datetime.strptime(line.split(" ")[0],'%H:%M:%S.%f')
            c=time1-time
            if c > (b-a):
                print(line)
            time=time1

#print(mem)
f_trace.close()