Python按行读取文件的实现方法【小文件和大文件读取】

#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)

#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()