Python逐行过滤Log日志并按耗时排序

import sys

strFilePath = 'E:\ParseLog\client.txt' ##sys.argv[1]

strKW = 'dt : '
kwLen = len(strKW)
loglist = []

class LogItem(object):
	def __init__(self, line, cost):
		super(LogItem, self).__init__()
		self.line = line
		self.cost = cost

def ParseLine(line):
	index = line.find(strKW)
	#if(strKW in line):
	if(-1 != index):
		timeCost = float(line[index + kwLen:])
		loglist.append(LogItem(line, timeCost))
		#print(line)

def PrintLogList(l):
	logNum = min(len(loglist), 20)
	for i in range(logNum):
		print(loglist[i].line)

def Compare(elem):
	return elem.cost

#逐行读取
with open(strFilePath, 'r') as f:
	for line in f.readlines():
		ParseLine(line)
	loglist.sort(key = Compare, reverse = True)

PrintLogList(loglist)

日志格式如：[2020.4.28] [15:33:18]: [LUA-print]  RemovePlayer dt :     0.1279296875