Home >Backend Development >Python Tutorial >What is the use of python read lines()? Where can it be used?
In today’s article, we will learn about the readlines method in Python. Before entering the article, we must first know what pythonreadlines is, readlines()Where can it be used in python programming and what role can it play. We can learn about these things in today’s article.
Overview
The readlines() method is used to read all lines (until the end character EOF) and return a list, which can be used by Python's for... in ...structure is processed.
If the end character EOF is encountered, an empty string is returned.
Syntax
fileObject.readlines( );
Return value
Example
The following example demonstrates the use of the readline() method: The content of the file runoob.txt is as follows:1:www.runoob.com 2:www.runoob.com 3:www.runoob.com 4:www.runoob.com 5:www.runoob.comLoop to read the contents of the file:
# !/usr/bin/python # -*- coding: UTF-8 -*- # 打开文件 fo = open("runoob.txt", "r") print "文件名为: ", 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 "读取的数据为: %s" % (line) # 关闭文件 fo.close()The output result of the above example is:
文件名为: runoob.txt 读取的数据为: 1:www.runoob.com 读取的数据为: 2:www.runoob.com 读取的数据为: 3:www.runoob.com 读取的数据为: 4:www.runoob.com 读取的数据为: 5:www.runoob.comIn this article, we understand what the readlines() method is. If you don’t understand, in fact You can try it yourself. After all, hands-on practice is the best way to verify what you have learned. Finally, I hope this article can bring some help to you who are learning python. For more related knowledge, please visit the
Python tutorial column on the php Chinese website.
The above is the detailed content of What is the use of python read lines()? Where can it be used?. For more information, please follow other related articles on the PHP Chinese website!