Install the Python Extension in Visual Studio Code – Complete Beginner's Guide
After installing Visual Studio Code, the next essential step is to install the Python Extension. This extension is developed and maintained by Microsoft and provides all the necessary features for Python development. Without it, Visual Studio Code is simply a text editor. With it, VS Code becomes a powerful Python Integrated Development Environment (IDE).
Since FastAPI is built using Python, installing the Python Extension is one of the most important setup steps before you begin developing FastAPI applications.
In this guide, you will learn how to install the Python Extension, verify that it is working correctly, and understand the features it provides.
What is the Python Extension?
The Python Extension is an official extension developed by Microsoft for Visual Studio Code. It adds Python language support, debugging tools, code navigation, IntelliSense, testing, Jupyter Notebook support, and many other developer-friendly features.
Without this extension, VS Code cannot fully understand Python code, making development more difficult.
Why Do We Need the Python Extension?
The Python Extension enables many advanced features that improve your coding experience.
Some of the most useful features include:
Python syntax highlighting
Intelligent code completion (IntelliSense)
Code error detection
Integrated debugging
Python interpreter selection
Virtual environment detection
Code navigation
Refactoring support
Jupyter Notebook support
Test discovery and execution
Integrated terminal support
These features make writing, testing, and debugging Python applications much easier.
Prerequisites
Before installing the Python Extension, ensure you have:
Windows 10 or Windows 11
Visual Studio Code installed
Python installed on your computer
Internet connection
If Python is not installed yet, complete the Install Python lesson before continuing.
Download the Python Extension
The Python Extension is available directly from the Visual Studio Code Marketplace.
Official Marketplace Page
https://marketplace.visualstudio.com/items?itemName=ms-python.python
You can also install it directly from inside Visual Studio Code.
Method 1: Install from Visual Studio Code (Recommended)
Step 1
Open Visual Studio Code.
Step 2
Click the Extensions icon on the left sidebar.
Alternatively, press:
Ctrl + Shift + XThe Extensions panel will open.
Step 3
In the search box, type:
PythonYou will see multiple extensions.
Choose the extension published by:
MicrosoftThe extension name should be:
PythonDo not install unofficial Python extensions.
Step 4
Click the Install button.
VS Code will download and install the extension automatically.
The installation usually takes less than a minute.
Step 5
After installation, you may be asked to reload VS Code.
If prompted, click:
Reloador restart Visual Studio Code.
Method 2: Install from the Marketplace Website
If you cannot access the Extensions panel, you can install the extension from the official Marketplace.
Official Python Extension:
https://marketplace.visualstudio.com/items?itemName=ms-python.python
Click Install, and the website will open Visual Studio Code and begin the installation automatically.
Verify the Installation
To confirm that the extension has been installed successfully:
Open the Extensions panel.
Search for:
PythonIf you see:
InstalledThe extension is installed successfully.
Verify Python Detection
Open any Python file:
hello.pyType:
print("Hello, FastAPI!")If keywords are highlighted with different colors and suggestions appear while typing, the extension is working correctly.
Select the Python Interpreter
The first time you open a Python file, VS Code may ask you to select a Python interpreter.
Click:
Select Python InterpreterChoose the latest installed Python version.
For example:
Python 3.13 (64-bit)If you have multiple Python versions installed, choose the one you intend to use for this course.
Features You'll Use Throughout This Course
During this FastAPI course, we'll use the Python Extension for:
Running Python programs
Creating virtual environments
Managing packages
Running FastAPI applications
Debugging code
Viewing errors
Code formatting
Auto-import suggestions
Testing applications
Common Installation Problems
Python Extension Does Not Appear
Ensure you are connected to the internet.
Refresh the Extensions panel and search again.
Unable to Install
Update Visual Studio Code to the latest version and try again.
Extension Installed but Python Not Detected
Ensure Python is installed correctly.
Restart Visual Studio Code.
Select the correct Python interpreter manually.
IntelliSense Not Working
Verify that:
The Python Extension is installed.
A Python interpreter is selected.
The file has a
.pyextension.
Best Practices
Always install the official Microsoft Python Extension.
Keep the extension updated.
Use the latest stable version of VS Code.
Use one Python interpreter per project.
Avoid installing multiple Python language extensions unless required.
Summary
Congratulations! You have successfully installed the Python Extension in Visual Studio Code.
Your editor is now ready for professional Python development. In the next lesson, we will install the Pylance Extension, which provides even faster IntelliSense, advanced type checking, and improved code analysis.
Frequently Asked Questions (FAQs)
Is the Python Extension free?
Yes. The Python Extension developed by Microsoft is completely free.
Do I need Python installed before installing the extension?
Yes. The extension provides editor support, but you still need Python installed to run Python programs.
Can I use this extension for FastAPI?
Absolutely. It is one of the most important extensions for FastAPI development.
Who develops the Python Extension?
The official Python Extension is developed and maintained by Microsoft.
Official Download Links
Visual Studio Code Marketplace (Python Extension)
https://marketplace.visualstudio.com/items?itemName=ms-python.python
Visual Studio Code