Python os.read() Method with example

Hello dear readers! Welcome back to another section of our tutorial on Python. In this tutorial guide, we are going to be studying about the Os read() method.

Python os read() method reads at most n bytes from file descriptor fd, returns a string containing the bytes read. If the end of the file referred to by fd has been reached, an empty string is returned.

Syntax

The following below is the syntax for Python Os read() method -

os.read(fd,  n)

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Parameter Details

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

• n - n bytes from the file descriptor fd.

Return Value

It returns a string that contains the bytes read.

Example

The following below is a simple example -

# !/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!!"

Output

When the above code is executed, it will produce the following result -

This is test
Closed the file successfully!!

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Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the Python OS readlink() Method.

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