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Python in Visual Studio Code Working with Python in Visual Studio Code, using the, is simple, fun, and productive. The extension makes VS Code an excellent IDE, and works on any operating system with a variety of Python interpreters. It leverages all of VS Code's power to provide auto complete and IntelliSense, linting, debugging, and unit testing, along with the ability to easily switch between Python environments, including virtual and conda environments. This article provides only an overview of the different capabilities of the Python extension for VS Code. For a walkthrough of editing, running, and debugging code, use the button below.
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Install Python and the Python extension The guides you through installing Python and using the extension. You must install a Python interpreter yourself separately from the extension. For a quick install, use. Once you have a version of Python installed, activate it using the Python: Select Interpreter command. If VS Code doesn't automatically locate the interpreter you're looking for, refer to.
You configure the Python extension through settings. Run Python in the Terminal To experience Python, create a file (using the ) named hello.py and paste in the following code (assuming Python 3): print( 'Hello World') The Python extension then provides shortcuts to run Python source code in the currently selected interpreter ( Python: Select Interpreter in the Command Palette):. In the text editor: right-click anywhere in the editor and select Run Python File in Terminal. If invoked on a selection, only that selection is run.
In Explorer: right-click a Python file and select Run Python File in Terminal. You can also use the Terminal: Create New Integrated Terminal command to create a terminal in which VS Code automatically activates the currently selected interpreter.
The Python: Start REPL activates a terminal with the currently selected interpreter and then runs the Python REPL. For a more specific walkthrough on running code, see the. Autocomplete and IntelliSense The Python extension supports code completion and IntelliSense using the currently selected interpreter. Is a general term for a number of features, including intelligent code completion (in-context method and variable suggestions) across all your files and for built-in and third-party modules. IntelliSense quickly shows methods, class members, and documentation as you type, and you can trigger completions at any time with ⌃Space (Windows, Linux Ctrl+Space).
Tip: Check out the. IntelliCode provides a set of AI-assisted capabilities for IntelliSense in Python, such as inferring the most relevant auto-completions based on the current code context.
Linting Linting analyzes your Python code for potential errors, making it easy to navigate to and correct different problems. The Python extension can apply a number of different linters including Pylint, Pep8, Flake8, mypy, pydocstyle, prospector, and pylama. Debugging No more print statement debugging! Set breakpoints, inspect data, and use the debug console as you run your program step by step. Debug a number of different type of Python applications, including multi-threaded, web, and remote applications.
For Python-specific details, including setting up your launch.json configuration and remote debugging, see. General VS Code debugging information is found in the. Snippets Snippets take productivity to the next level. You can configure and use snippets provided by an extension. Snippets appear in the same way as code completion ⌃Space (Windows, Linux Ctrl+Space).
Environments The Python extension automatically detects Python interpreters that are installed in standard locations. It also detects conda environments as well as virtual environments in the workspace folder.
You can also use the python.pythonPath setting to point to an interpreter anywhere on your computer. The current environment is shown on the left side of the VS Code Status Bar: The Status Bar also indicates if no interpreter is selected: The selected environment is used for IntelliSense, auto-completions, linting, formatting, and any other language-related feature other than debugging. It is also activated when you use. To change the current interpreter, which includes switching to conda or virtual environments, select the interpreter name on the Status Bar or use the Python: Select Interpreter command.
VS Code prompts you with a list of detected environments as well as any you've added manually to your user settings (see ). Installing packages Packages are installed using the Terminal panel and commands like pip install (Windows) and pip3 install (macOS/Linux). VS Code installs that package into your project along with its dependencies. Jupyter notebooks If you open a file (.ipynb) in VS Code, the Python extension prompts you to import the notebook as a Python code file. The notebook's cells are delimited in the Python file with #%% comments, and the Python extension shows Run Cell or Run All Cells CodeLens. Selecting either CodeLens starts the Jupyter server and runs the cell(s) in the Python interactive window: You can also connect to a remote Jupyter server for running the code.
Furthermore, importing a notebook into VS Code allows you to use all of VS Code's debugging capabilities. You can then save the notebook file and opening it again as a notebook in Jupyter or upload to a service like. For more information, see. Unit testing The Python extension supports with the unittest, pytest, and nose test frameworks.
To run unit tests, you enable one of the frameworks in settings. Each framework also has specific settings, such as arguments that identify paths and patterns for test discovery. Once discovered, VS Code provides a variety of commands (on the Status Bar, the Command Palette, and elsewhere) to run and debug tests, including ability to run individual test files and individual methods.
Configuration The Python extension provides a wide variety of settings for its various features. These are described on their relevant topics, such as,. The complete list is found in the. Other popular Python extensions The provides all of the features described previously in this article. Additional Python language support can be added to VS Code by installing other popular Python extensions. For Jupyter support, we recommend the 'Jupyter' extension from Don Jayamanne. Open the Extensions view ( ⇧⌘X (Windows, Linux Ctrl+Shift+X)).
Filter the extension list by typing 'python'.