Python File fileno() Method

Description

The method fileno() returns the integer file descriptor that is used by the underlying implementation to request I/O operations from the operating system.

Syntax

Following is the syntax for fileno() method

fileObject.fileno(); 

Parameters

• NA

Return Value

This method returns the integer file descriptor.

Example

The following example shows the usage of fileno() method.

#!/usr/bin/python

# Open a file
fo = open("foo.txt", "wb")
print "Name of the file: ", fo.name

fid = fo.fileno()
print "File Descriptor: ", fid

# Close opend file
fo.close()

Let us compile and run the above program, this will produce the following result:

Name of the file:  foo.txt
File Descriptor:  3