microsoft/pylance-release 2021.2.4

on GitHub

Notable changes:

• The mapping of stub files to source files has been greatly improved. Go-to-definition and doc strings should now work for a much wider range of code.
  (pylance-release#809, pylance-release#949)
• Index expression type narrowing is now supported. For example, a check like if some_tuple[1] is not None will cause future uses of some_tuple[1] to not be None, without needing to narrow a temporary variable.
• Auto-import completion performance has been improved.
• Pylance's copy of typeshed has been updated.

For the full changelog, see CHANGELOG.md.