What is python close()? Detailed explanation of python close() definition and usage

In today’s article, we will learn about close in Python. Before entering the article, we must first know what Pythonclose is and what close means, where it can be used in python programming, and what role it can play. We can learn about these things in today’s article.

Overview:

close() method is used to close an open file. The closed file can no longer be read or written, otherwise a ValueError error will be triggered. The close() method can be called multiple times.

When the file object is referenced to operate another file, Python will automatically close the previous file object. It is a good practice to close a file using the close() method.

Syntax

##close() method syntax is as follows:

fileObject.close();

(This method has no return value)

Example

The following example demonstrates the use of the close() method:

#!/usr/bin/python
# -*- coding: UTF-8 -*-
# 打开文件
fo = open("runoob.txt", "wb")
print "文件名为: ", fo.name
# 关闭文件
fo.close()

The output result of the above example is :

文件名为:  runoob.txt

In this article, we understand what close() is. If you don’t understand, you can actually try it yourself. After all, hands-on practice is the best way to verify what you have learned. and pathways. Finally, I hope this article can bring some help to you who are learning python.

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