Python os.read() Method

Description

The method read() read at most n bytes from file desciptor fd, return a string containing the bytes read. If the end of file referred to by fd has been reached, an empty string is returned.

Syntax

Following is the syntax for read() method

os.read(fd,n)

Parameters

• fd -- This is the file descriptor of the file.

• n -- These are n bytes from file descriptor fd.

Return Value

This method returns a string containing the bytes read.

Example

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

# !/usr/bin/python

import os, sys
# Open a file
fd = os.open("f1.txt",os.O_RDWR)
	
# Reading text
ret = os.read(fd,12)
print ret

# Close opened file
os.close(fd)
print "Closed the file successfully!!"

Let us compile and run the above program, this will print the contents of file f1.txt:

This is test
Closed the file successfully!!