Python reads files by line implementation of "Small files and large file reads"

The example in this article describes how Python reads files by line. Share to everyone for your reference, as follows:

Small files:

#coding =utf-8#author:walker#date:2013-12-30#function: Read small files by line 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)

Large files:

#coding =utf-8#author:walker#date:2013-12-30#function: Read large file by row try:  file = open (' Txt.txt ', ' r ') for lines in  File:    print (line) except IOError as err:  print (' File error: ' + str (ERR)) Finally:  if ' File ' in Locals (): 
 file.close ()