Skip to main content

The os module in python

By Saurabh Patel

This module represents generic operating system functionality. This module is especially important if you want to make your programs platform-independent i.e. it allows the program to be written such that it will run on Linux as well as Windows without any problems and without requiring changes. An example of this is using the os.sep variable instead of the operation system-specific path separator.
Some of the more useful parts of the os module are listed below Most of them are self-explanatory.
  • The os.name string specifies which platform you are using, such as 'nt' for Windows and 'posix' for Linux/Unix users.
  • The os.getcwd() function gets the current working directory i.e. the path of the directory from which the curent Python script is working.
  • The os.getenv() and os.putenv() functions are used to get and set environment variables respectively.
  • The os.listdir() function returns the name of all files and directories in the specified directory.
  • The os.remove() function is used to delete a file.
  • The os.system() function is used to run a shell command.
  • The os.linesep string gives the line terminator used in the current platform. For example, Windows uses '\r\n', Linux uses '\n' and Mac uses '\r'.
  • The os.path.split() function returns the directory name and file name of the path.
        
>>> os.path.split('/home/swaroop/byte/code/poem.txt')
('/home/swaroop/byte/code', 'poem.txt')
  • The os.path.isfile() and the os.path.isdir() functions check if the given path refers to a file or directory respectively. Similarly, the os.path.exists() function is used to check if a given path actually exists.
You can explore the Python Standard Documentation for more details on these functions and variables. You can use help(sys), etc. as well.
Labels:

Comments

Post a Comment

Popular posts from this blog

HTML Emailing in ZF2

By Saurabh Patel
<?php namespace Application\Model; use Zend\Mail\Message; use Zend\Mime\Message as MimeMessage; use Zend\Mime\Part as MimePart; use Zend\Mail\Transport\Sendmail as SendmailTransport; use Zend\Mail\Transport\Smtp as SmtpTransport; use Zend\Mail\Transport\SmtpOptions; use Zend\View\Renderer\PhpRenderer; use Zend\View\Resolver\TemplatePathStack; use Zend\View\Model\ViewModel; use Zend\View\Model\ModelInterface; class ApiEmail extends ApiInterface {    protected $From = "XXXXX@gmail.com";    protected $FromName = "XXXX";    protected $To = "" ;    protected $Subject = "" ;    protected $Body = "" ;    protected $Cc = "XXXXXX@gmail.com";    protected $Bcc = "XXXXX@gmail.com" ;    protected $ReplyTo = "XXXX@gmail.com" ;    protected $Sender = "" ;    protected $Encoding = "UTF-8" ;    protected $MESSAGE ; // getter setter ...
Post a Comment
Read more

How to Set Up a Home Smart Office – A Step-by-Step Guide

By Saurabh Patel
  By Luna Lush In today's world, working from home has become the norm for many, making it essential to have a smart, efficient, and comfortable home office. With the right tech tools, you can transform any space into a productivity hub. In this tutorial, we'll walk you through setting up a home smart office that maximizes efficiency, comfort, and connectivity. Step 1: Choose the Right Space Before diving into tech, pick the ideal spot in your home. Whether it's a dedicated room or a cozy corner, ensure the area is quiet, well-lit, and free from distractions. Good lighting is crucial for video calls and reduces eye strain during long hours of work. Step 2: Invest in a Smart Desk Setup A smart desk setup is the foundation of your home office. Consider the following: Adjustable Standing Desk: Invest in a desk that allows you to switch between sitting and standing. Many options come with programmable settings to easily adjust the height. Ergonomic Chair: A chair that support...
Post a Comment
Read more

Grouped CheckboxSelectMultiple in Django template

By Saurabh Patel
from itertools import groupby from django import forms from django . forms . models import ModelChoiceIterator , ModelMultipleChoiceField from . models import Feature , Widget class GroupedModelMultipleChoiceField ( ModelMultipleChoiceField ): def __init__ ( self , group_by_field , group_label = None , * args , ** kwargs ): """ ``group_by_field`` is the name of a field on the model ``group_label`` is a function to return a label for each choice group """ super ( GroupedModelMultipleChoiceField , self ). __init__ (* args , ** kwargs ) self . group_by_field = group_by_field if group_label is None : self . group_label = lambda group : group else : self . group_label = group_label def _get_choices ( self ): if hasattr ( self , '_choices' ): return self . _choices return GroupedModelCho...
Post a Comment
Read more