pytest Language Server for VS Code

A blazingly fast Language Server Protocol implementation for pytest fixtures, written in Rust.

Features

Go to Definition: Jump to fixture definitions from usage
Go to Implementation: Navigate to yield statements in generator fixtures
Call Hierarchy: Explore fixture dependencies (incoming/outgoing calls)
Code Completion: Smart auto-completion for pytest fixtures with context-aware suggestions
Find References: Find all usages of a fixture
Hover Documentation: View fixture signatures and docstrings
Document Symbols: Navigate fixtures within a file using the outline view
Workspace Symbols: Search for fixtures across your entire workspace
Code Lens: See fixture usage counts directly above definitions
Inlay Hints: See fixture return types inline next to parameters
Diagnostics: Warnings for undeclared fixtures, scope mismatches, and circular dependencies
Code Actions: Quick fixes to add missing fixture parameters
Fixture Priority: Correctly handles pytest's fixture shadowing rules

By default, the extension uses the bundled pytest-language-server binary. You can configure a custom path:

{
  "pytestLanguageServer.executable": "/path/to/pytest-language-server"
}

To use the system version from PATH:

{
  "pytestLanguageServer.executable": "pytest-language-server"
}

Enable LSP communication tracing:

{
  "pytestLanguageServer.trace.server": "verbose"
}

None! The extension includes pre-built binaries for:

Alternatively, you can install pytest-language-server from PyPI:

pip install pytest-language-server

The language server automatically activates for Python files in your workspace. No additional configuration is needed.

MIT