What is Python Fileno ()? What does Python Fileno () do?

In this article, let's look at the Fileno in Python (), before we go into the article we first need to know what we are going to learn, and we don't know what it is. Because today is about Pythonfileno ()and explaining what Fileno () means to you. These things we can all learn in today's article.

Overview

The Fileno () method returns an integer that is a file descriptor (a descriptor FD integer) that can be used for I/O operations of the underlying operating system

Grammar

The Fileno () method syntax is as follows:

Fileobject.fileno ();

return value

Returns the file descriptor.

Instance

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

#!/usr/bin/python#-*-coding:utf-8-*-# Open File fo = open ("Runoob.txt", "WB") print "file name:", Fo.namefid = Fo.fileno () print " File descriptor: ", fid# close file Fo.close ()

The result of the above example output is:

The file name is:  runoob.txt file Descriptor:  3

In this article, we understand what is Fileno (), do not understand the words in fact, they can try to do, after all, hands-on practice is the best way to verify the learning. Finally, I hope that this article will give you a little help in learning about Python.

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