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[no audio]

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Friends, here we are going to do

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simple practice with your platform and

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'os' modules. Task is, write a single Python script to clear

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terminal of any operating system or I can say write a platform

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independent script to clear terminal.

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See here,

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my intention is I want to write one Python script, and that

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Python script has to run on any of your operating system,

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and while running that script on your any one of your

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operating systems

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it has to clear the terminal. That means first

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let me open my Windows operating system. Suppose

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I am running in this way. Now clear screen means, suppose if

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I run here Python script it has to do in this way,

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it has to clear my terminal. Same way suppose

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I am, this is my Unix or Linux system, right, if I run your

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Python script here,

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it has to clear a screen, it has to do in this way.

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So in that way I need to implement my script.

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See guys, by default to clear your terminal suppose as of

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now based on our previous concept, suppose

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we don't have any, we didn't see any command in Python directly,

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but we know one thing, from 'os' module we can run any operating

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system command, right. That's why

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what I am doing is, I am writing a simple Python script, right,

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that is 'clear_screen'.

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Guys, directly you can run 'clear' command on your Unix-like

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systems, and the 'cls' command on your Windows operating system,

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but to provide some idea to use your different modules, to

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work with your different modules

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I am taking this simple example, right, 'clear_screen.py'.

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See I can import, I can import 'os' module, right?

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See if it is Unix-like system,

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I have to run 'os.system("clear")' command,

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and if it is Windows I have to run 'cls' command. See my intention

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is, I want to write one Python script, and it has to work with

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all operating systems. Suppose if I take only 'os.system()',

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and then 'clear',

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right, then it will work with only your Unix-like systems.

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Let me run this 'python3', or first of all randomly, right.

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[no audio]

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Now, I am going to run your script. 'python3', then 'clear_screen'.

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Yes, it's clearing your screen. But same script

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I want to copy,

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[no audio]

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to your Windows operating system. There

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I want to run. Let me do it one thing.

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'vim clear_screen.py'. So here

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I am going to copy whatever the code you are having here.

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Let me copy that code.

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So this code I am copying, and I'm going to paste it on

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your windows.

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[no audio]

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Right. Now, see that. Let me save it and let me run it.

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'python', on Windows you know 'python' is there,

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'clear_screen',

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See you are getting an error, 'clear' is not recognized as

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an internal or external command, because 'clear' command

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is for your Unix-like systems, not for Windows.

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Now what I have to do? Whenever if you're running from Windows,

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right, I need to run 'cls' instead of 'clear',

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right, but because of this modification you have two different

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scripts. See this is 'os.system("cls")', but this is 'os.system("clear")'.

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But what I have to do is, I have to run same script on

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Windows as well as your other Unix-like systems so that it

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has to work. Then see that, first of all I am writing,

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Sorry.

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[no audio]

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I am writing both the commands here.

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'os.system(

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"clear")', and then 'os.system("cls")', but I want to

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run this command if it is Unix-like systems,

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I want to run this command if it is Windows operating system,

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right. Suppose first

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I will take 'cls',

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then second I will take 'clear'.

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See guys, if you remember

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you can identify your operating system name from this module,

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'platform' module, right?

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See what I am doing is, 'if platform.',

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'windows', sorry, 'system',

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[no audio]

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if it is '== "Windows"', then I am going to run

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'os.system("cls")', 'else'

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I am running 'os.system("clear")'

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Right. See, how it is going to work? You know 'platform.system'

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is going to give your operating system name on which

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you are running your Python script. Suppose

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if I run this script on my Windows operating system

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then this value becomes 'Windows'. If it is 'True', you know

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your python 'if' condition is allowed to execute this line,

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and you know in 'if-else', if 'if' condition is 'True', then by default

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'else' is going to skip. Same skip just assume that you are

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going to run on your Unix-like systems. Whenever if you are

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running this script on Unix-like systems,

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this value is your 'Linux', then this is 'False', right?

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If it is 'False', then 'if' doesn't allow to execute this line,

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and if this is 'False' by default without checking any condition

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'else' block will execute, right. Now,

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I am copying this code.

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First of all, let me run this on your Windows operating system.

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[no audio]

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Yes, it's prompting.

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'sys', yes. Spelling mistake guys.

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It's my bad.

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[no audio]

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's-y-s-t-e-m'

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[no audio]

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Yeah, it's correct here.

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[no audio]

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Let me run your script.

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[no audio]

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Right. Just clearing your screen.

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Same code, whatever you have here, that code

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I'm going to copy it and paste it on your Unix-like systems.

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Right. See let me open, before that

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let me nullify your previous data, and I am going to open

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your 'clear_screen' script, and I am simply copying and pasting

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your code from your Windows operating system.

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Now, I am going to run this.

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It's clearing.

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Right. See guys, be clear.

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So here I use the concept of your 'os' and 'platform' modules

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along with your 'if-else' concept.

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So now this is a platform independent script. This script

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you can use on any operating system such that it is going

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to clear your terminal.

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So one script it is going to work with all operating systems.

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Right. So this is the simple script to clear your terminal, and

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it is a platform independent script.

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So that is important guys here.

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So whenever you are writing Python script, right, and in your

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real time if you have multiple operating systems, then you

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have to write your Python script in such a way that it has to

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work with all your operating systems.

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Right. Okay.

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Thank you for watching this video.

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[no audio]