#程序1: 實現簡單的shell sed替換功能

import sys,os
old_file = open(‘test.txt‘,‘r‘,encoding=‘utf-8‘)
new_file = open(‘test_bak.txt‘,‘w‘,encoding=‘utf-8‘)
old_line = input(‘替換前內容>>:‘)
new_line = input(‘替換後內容>>:‘)


for line in old_file:
    #print(line.strip())
    if old_line in line:
        line 
 
= line.replace(old_line,new_line)
    new_file.write(line)
old_file.close()
new_file.close()

Python自動化開發—EX.3(實簡單的shell sed功能)