
This means that you'll get the latest and greatest language support right out of the box with the Python extension (no separate install needed!)." As of this release, we've included the Pylance extension as an optional dependency for the core Python extension. "If you've been following along with our releases over the last year, we've been making dramatic improvements to Python language support via the Pylance extension. "This upgrade provides what we believe is the most performant and user-friendly Python editing experience for Visual Studio Code ever. "Today, we're excited to announce that the Python extension's default language support is now powered by Pylance, said Savannah Ostrowski, program manager for Python and its VS Code language server.

As-you-type reporting of code errors and warnings (diagnostics).Auto-imports (as well as add and remove import code actions).Pylance, named after a character in a Monty Python movie, is based on a Microsoft static type checker called Pyright.

No such language server is more important to VS Coders than Pylance, as it is now bundled as an optional offering with the core Python extension that has been installed a whopping 35.5 million times, way more than any other tool. Yesterday, (May 10), Python extension dev team announced Pylance is the default language server, supplanting the Microsoft Python Language Server announced way back in 2018. Those extensions make the super-popular VS Code a jack-of-all-trades tool for working with C#, C++, Java and many more. Language servers come via extensions that implement the Language Server Protocol to provide language-specific "smarts" in the editor such as autocomplete, error-checking (diagnostics), jump-to-definition and many other language-specific features.

Pylance is now the default language server for Python in Visual Studio Code, providing IntelliSense functionality as of the May 2021 release of the Python Extension for VS Code.
