Python File readlines () usage, pythonreadlines

Python File readlines () usage, pythonreadlines

Overview

readlines() The method is used to read all rows (until the end of EOF) and return a list. The list can be processed by the structure of Python.

If the EOF operator is met, an empty string is returned.

Syntax

readlines() The method syntax is as follows:

FileObject. readlines ();

Parameters
None.

Return Value
The returned list contains all rows.

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

The contents of the jb51.txt file are as follows:

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

Read the object content cyclically:

Python2

#! /Usr/bin/python #-*-coding: UTF-8-*-# open the file fo = open ("jb51.txt", "r") print "file name:", fo. name for line in fo. readlines (): # Read line = line in sequence. strip () # Remove blank print at the beginning and end of each line "read data: % s" % (line) # close the file fo. close ()

Python3

#-*-Coding: UTF-8-*-# open the file fo = open ("jb51.txt", "r") print ("file name:", fo. name) for line in fo. readlines (): # Read line = line in sequence. strip () # Remove the blank print at the beginning and end of each line ("read data: % s" % (line) # close the file fo. close ()

Shows the effect.

This article introduces you here. For more information, see