{"id":100,"date":"2020-10-03T01:41:43","date_gmt":"2020-10-03T01:41:43","guid":{"rendered":"https:\/\/www.pythontutorial.net\/?page_id=100"},"modified":"2025-03-25T09:22:51","modified_gmt":"2025-03-25T09:22:51","slug":"python-hello-world","status":"publish","type":"page","link":"https:\/\/www.pythontutorial.net\/getting-started\/python-hello-world\/","title":{"rendered":"Python Hello World"},"content":{"rendered":"\n

Summary<\/strong>: in this tutorial, you’ll learn how to develop the first program in Python called “Hello, World!”. <\/p>\n\n\n\n

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If you can write “hello world” you can change the world.<\/p>\nRaghu Venkatesh<\/strong><\/cite><\/blockquote>\n\n\n\n

Creating a new Python project #<\/a><\/h2>\n\n\n\n

First, create a new directory called helloworld<\/code> anywhere in your system, e.g., C:\\ drive.<\/p>\n\n\n\n

Second, launch the VS Code and open the helloworld<\/code> directory.<\/p>\n\n\n\n

Third, create a new app.py<\/code> file, enter the following code, and save it:<\/p>\n\n\n

print('Hello, World!'<\/span>)<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
What is a function #<\/a><\/h2>\n\n\n\n
When you sum two numbers, that’s a function<\/a>. And when you multiply two numbers, that’s also a function. Generally, a function takes your inputs, applies some rules, and returns a result.<\/p>\n\n\n\n
In the above example, the print()<\/code> is a function. It accepts a string and shows it on the screen.<\/p>\n\n\n\n
Python has many built-in functions like the print()<\/code> function you can use out of the box in your program.<\/p>\n\n\n\n
In addition, Python allows you to define your functions<\/a>, which you’ll learn how to do it later.<\/p>\n\n\n\n
Executing the Python Hello World program #<\/a><\/h2>\n\n\n\n
To execute the app.py<\/code> file, you first launch the Command Prompt on Windows or Terminal on macOS or Linux.<\/p>\n\n\n\n
Then, navigate to the helloworld<\/code> directory.<\/p>\n\n\n\n
After that, type the following command to execute the app.py<\/code> file:<\/p>\n\n\n
python app.py<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
If you use macOS or Linux, you use python3<\/code> command instead:<\/p>\n\n\n
python3<\/span> app<\/span>.py<\/span><\/code><\/span>Code language:<\/span> CSS<\/span> (<\/span>css<\/span>)<\/span><\/small><\/pre>\n\n\n
If everything is fine, you’ll see the following message on the screen:<\/p>\n\n\n
Hello, World!<\/code><\/span>Code language:<\/span> Python<\/span> (<\/span>python<\/span>)<\/span><\/small><\/pre>\n\n\n
If you use VS Code, you can also launch the Terminal within the VS code by:<\/p>\n\n\n\n
The print()<\/code> is a built-in function<\/a> that displays a message on the screen. In this example, it’ll show the message 'Hello, World!'<\/code>.<\/p>\n\n\n\n