Python File ReadLines () How to use

The ReadLines () method is used to read all rows (until the Terminator is EOF) and return the list, which can be made by Python for ... in ... The structure is processed and if the Terminator is encountered, an empty string is returned, and the desired friend can refer to the following

Overview

readlines() method is used to read all rows (until the end of EOF) and to return the list, which can be made by Python for ... in ... Structure for processing.

Returns an empty string if the Terminator EOF is encountered.

Grammar

readlines() The method syntax is as follows:

Fileobject.readlines ();

Parameters
No.

return value
Returns a list that contains all the rows.

Instance
The following example demonstrates the use of the ReadLine () method:

The contents of the file Jb51.txt are as follows:

1:www.jb51.net
2:www.jb51.net
3:www.jb51.net
4:www.jb51.net
5:www.jb51.net

To iterate through the contents of a file:

The writing of Python2

#!/usr/bin/python#-*-coding:utf-8-*-# Open File fo = open ("Jb51.txt", "R") print "file name:", Fo.name for line in Fo.readlines ( ):             #依次读取每行 Line   = Line.strip ()               #去掉每行头尾空白   print "read data:%s"% (line) # Close file Fo.close ()

The writing of Python3

#-*-coding:utf-8-*-# Open File fo = open ("Jb51.txt", "R") print ("File name:", Fo.name) for line in Fo.readlines ():             #依次读取每行 
  
   line = Line.strip ()               #去掉每行头尾空白   print ("Read data:%s"% (line)) # Close file Fo.close ()
  

The effect is as shown