本代码是《Python核心编程(第二版)》第九章的9-6练习题，完成的功能为：文件比较：比较两个文本文件是否相同，如果不同，给出第一个不同处的行号和列号。
1 #!/usr/bin/env python 2 #-*- coding: utf-8 -*- 3 4 5 #文件比较：比较两个文本文件是否相同，如果不同，给出第一个不同处的行号和列号 6 def func_9_6(): 7 choice1 = raw_input("Enter one filename: ") 8 choice2 = raw_input("Enter another filename: ") 9 if choice1 == '' or choice2 == '': 10 return 11 f1 = open(choice1) 12 f2 = open(choice2) 13 lines1 = f1.readlines() 14 lines2 = f2.readlines() 15 lines_tmp1 = len(lines1) if len(lines1) < len(lines2) else len(lines2) 16 for i in range(lines_tmp1): 17 if lines1[i] == lines2[i]: 18 continue 19 lines_tmp2 = len(lines1[i]) if len(lines1[i]) < len(lines2[i]) else len(lines2[i]) 20 for j in range(lines_tmp2): 21 if lines1[i][j] == lines2[i][j]: 22 continue 23 else: 24 print '%s is not equal of %s, col:%d raw:%d ' % (choice1, choice2, i+1, j+1) 25 if len(lines1) == len(lines2) and i == lines_tmp1-1: 26 print '%s is equal of %s ' % (choice1, choice2) 27 28 def showmenu(): 29 while True: 30 choice = raw_input("Enter question num, (Q)uit: ") 31 if choice.lower() == 'q': 32 break 33 if choice == '9-6': 34 func_9_6() 35 36 if __name__ == '__main__': 37 showmenu()
测试结果：
1 [root@192 python_code]# python file_operate.py 2 Enter question num, (Q)uit: 9-6 3 Enter one filename: testfile 4 Enter another filename: testfile 5 testfile is equal of testfile 6 7 Enter question num, (Q)uit: 9-6 8 Enter one filename: testfile 9 Enter another filename: myfile 10 testfile is not equal of myfile, col:1 raw:6 11 12 Enter question num, (Q)uit:
两个文件testfile和myfile的内容如下：
[root@192 python_code]# more testfile hello world [root@192 python_code]# more myfile helloworld [root@192 python_code]#