用python合并多个日志，加上文件序号和文件名

需求：有多个日志文件，一个一个打开比较麻烦，希望把多个日志文件合并在一起

并且加上序号，以及文件的名称，例如：

 

# -*- coding: utf-8 -*-
"""
Created on Mon Jul 22 15:50:13 2019

@author: lizhenzhu
"""

from os import listdir

dirPath = "C:/Users/lizhenzhu/Desktop/python/log"
files=listdir('C:/Users/lizhenzhu/Desktop/python/log')

res = ""
i = 0
for file in files:
    if file.endswith(".log"):
        i += 1
        title = "第%s个 %s" % (i, file[0:len(file)-4])

        with open("C:/Users/lizhenzhu/Desktop/python/log/" + file, "r", encoding='utf-8') as file:
            content = file.read()
            file.close()

        append = "\n%s\n\n%s" % (title, content)
        res += append

with open("C:/Users/lizhenzhu/Desktop/python/log/aaa_dag_all.log", "w", encoding='utf-8' ) as outFile :
    outFile.write(res)
    outFile.close()
print(len(res))