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Python os.popen() 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 popen() method.

Python os popen() method opens a pipe to or from command. It returns an open file object that is connected to the pipe, which can be read or written to depending on whether mode is 'r' or 'w', and the default mode is 'r'. The bufsize has same meaning as open() method.


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

os.popen(command[,  mod[,   bufsize]] )

Parameter Details

  • command - The command used.
  • mode - This is the mode. It can be 'r' (default) or 'w'.
  • bufsize - If the buffering value is set to 0, no buffering will take place. If set to 1, line buffering is going to be performed while accessing a file. If you specify the buffering value as an integer greater than 1, then buffering will be performed with the specified buffer size. If its negative, the buffer size is the system default.

Return Value

It returns an open file object that is connected to the pipe.


The following below is a simple example -

# !/usr/bin/python

import os, sys

# using command mkdir
a = 'mkdir nwdir'

b = os.popen(a,'r',1)

print b

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

open file 'mkdir nwdir', mode 'r' at 0x81614d0

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

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