Creating and Executing a Python Program on Windows | Celestial Warrior

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Frequently Asked Questions: file:///C:/Users/Taha%20Umar%20Farooq/Videos/FOLDER/[Tutsgalaxy.com]%20-%20The%20Python%20Mega%20Course%20Build%2010%20Real%20World%20Applications/01%20Getting%20Started/009%20Installation%20FAQs.html

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H, again. In this video I'll show you how to create and how to run a Python program. In the previous lecture

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we set up Python and we ran a Python interactive session.

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So that was like a running code line by line.

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But what you want to do instead, we want to write code that we are able to save it in a file and we're

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able to run all the code at once.

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So that's what we're going to do in this lecture.

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And this is targeted to Windows users.

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So if you have a Windows computer please watch this.

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If you have a Mac computer or even a Linux computer please skip this video and go to the next video

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where I show you the same process but on a Mac computer. So Windows users,

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let's create a Python program and we're going to use very basic tools for now.

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But then in the next lecture we're going to download and use an advanced editor. On Windows before creating

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the program

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there is something you need to make sure of. You go to organize and you go to folder search options

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you go to View and then look here for this option.

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Hide extensions for known file types.

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You want to make sure this option is unchecked just as I have it here. Don't check it.

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Cancel that and with the option unchecked you go had and right click and create create a text document.

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And put a name.

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Let's say my program and you want to remove the txt extension.

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And want to say .py.

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OK.

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No problem.

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I want to change the name.

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Now this is a file where you're going to write your Python code.

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So just go ahead and edit, edit it with an editor that you have.

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Maybe Notepad.

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We're going to use Atom later. For now

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this is good.

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And this program, what this will do, it will print out some text.

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Let's say the 'Hello' text.

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So that's what you do, you use the Python print function, and the print function

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has this syntax.

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So it expects to have some brackets opening and closing brackets.

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And inside these brackets you want to pass the thing that you want to print out.

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In this case this is called a string. We'll cover strings later.

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Or you can say text.

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So we want to print out some text and text goes inside quotes always.

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So strings go, strings go inside quotes. Make sure you want to save control s, exit the script and then click

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outside in here and hold shift and then right click and then you want to go to

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Open command window here that you open the command prompt.

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Look carefully and you'll see that the command prompt was open.

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In this current directory which reflects which is actually the directory of your python file.

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So this one in here. This one in here is in here.

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So before you run the program you need to have these two directories the same because if you open

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the command prompt from here as we did in the previous lecture that will go to another default directory.

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So the best way to do it as I did it here.

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Click and go to open command window here and then what you do is you type python and then the name of your

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program, my program.py. So what you're doing is you're using Python, the python program to execute

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this file and you get the output in the command line which is hello, the text Hello.

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Similarly I could execute it with my Python 3.6, dot py and you get the same output again.

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So 3.6, 3.7 doesn't make any big difference.

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The differences are very very slight.

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So you don't have to worry about that.

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Let me execute it one more time, Python.

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If you type now my and if you press the Tab key, that will autocomplete the name of your file.

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So it will find the name of your file because it knows that you are in the current directory so use Tab

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for auto completion and yeah, again you execute it and you get the output.

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Of course you can go ahead and add other lines of code there. Let's say print 7, a number.

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Numbers don't go inside quotes, control s to save and close and go to the command line again and press

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the upper arrow key to execute, to call a previously executed statement.

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So upper arrow key will call Python my program.py. Execute and you get

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Hello

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and 7. That's the idea.

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Hope you enjoyed this and I'll talk to you in the next lecture.