本文实例讲述了Python按行读取文件的实现方法。分享给大家供大家参考，具体如下：

小文件：

#coding=utf-8 #author: walker #date: 2013-12-30 #function: 按行读取小文件 all_lines = [] try: file = open('txt.txt', 'r') all_lines = file.readlines() except IOError as err: print('File error: ' + str(err)) finally: if 'file' in locals(): file.close() for line in all_lines: print(line)

大文件：

#coding=utf-8 #author: walker #date: 2013-12-30 #function: 按行读取大文件 try: file = open('txt.txt', 'r') for line in file: print(line) except IOError as err: print('File error: ' + str(err)) finally: if 'file' in locals(): file.close()

希望本文所述对大家Python程序设计有所帮助。