python文件处理（对比和筛选）

#!/user/bin/python
#!coding=utf-8
# -*- coding: utf-8 -*-
# 2017-9-25
#author:jingwenshuai
import sys
import difflib
import re
import os

#--------------------------------比对两文件，将结果存入Result.html-------------------------------------------#

# 读取配置文件函数
def read_file(file_name):
    try:
        file_handle = open(file_name, ‘r‘)
        text = file_handle.read().splitlines()         # 读取后以行进行分割
        file_handle.close()
        return text
    except IOError as error:
        print ‘Read file Error: {0}‘.format(error)
        sys.exit()

# 比较两个文件并输出html格式的结果
def compare_file(file1_name, file2_name):
    if file1_name == "" or file2_name == "":
        print ‘文件路径不能为空：file1_name的路径为：{0}, file2_name的路径为：{1} .‘.format(file1_name, file2_name)
        sys.exit()
    text1_lines = read_file(file1_name)
    text2_lines = read_file(file2_name)
    diff = difflib.HtmlDiff()                             # 创建htmldiff 对象
    result = diff.make_file(text1_lines,text2_lines)     # 通过make_file 方法输出 html 格式的对比结果
    #  将结果保存到result.html文件中并打开
    try:
        with open(‘result.html‘, ‘w‘) as result_file:     #同 f = open(‘result.html‘, ‘w‘) 打开或创建一个result.html文件
            result_file.write(result)                     #同 f.write(result)
    except IOError as error:
        print ‘写入html文件错误：{0}‘.format(error)

#------------------------------------取出不同部分存入Result.txt-------------------------------------------#

#取出不同部分存入Result.txt
def result(file1_name,file2_name):
    if file1_name == "" or file2_name == "":
        print ‘文件路径不能为空：file1_name的路径为：{0}, file2_name的路径为：{1} .‘.format(file1_name, file2_name)
        sys.exit()
    str1=[]
    str2=[]
    str_dump=[]
    #将A.txt的内容逐行读到str1中
    with open(file1_name,‘r‘) as fa:                #相当于fa=open(file1_name,‘r‘)
        for line in fa.readlines():
            str1.append(line.replace("\n",‘‘))      #line.replace("\n",‘‘) 去掉换行符\n
    #将B.txt中的内容逐行读到str2中
    with open(file2_name,‘r‘) as fb:
        for line in fb.readlines():
            str2.append(line.replace("\n",‘‘))

    #将两个文件中重复的行，添加到str_dump中
    for i in str1:
        if i in str2:
            str_dump.append(i)

    #将两个文件的行合并，并去重
    str_all=set(str1+str2)

    #将重复的行，在去重的合并行中，remove掉，剩下的就是不重复的行了
    for i in str_dump:
        if i in str_all:
            str_all.remove(i)
    #写入文件中
    with open("Result.txt",‘w+‘) as fc:
        for i in list(str_all):
            fc.write(i+‘\n‘)
    fa.close()
    fb.close()
    fc.close()

if __name__ == "__main__":
    x = raw_input(u"请输入第一个文件路径：")
    y = raw_input(u"请输入第二个文件路径：")
    compare_file(x, y)    #传入两文件的路径
    result(x,y)    #传入两文件的路径

原文地址：https://www.cnblogs.com/yizhipanghu/p/9701059.html