setup

Python LSP Setup

This command will configure your Python development environment with Pyright LSP and essential tools.

Prerequisites Check

First, verify Python is installed:

python --version || python3 --version

Installation Steps

1. Install Pyright LSP Server

npm install -g pyright

Or with pip:

pip install pyright

2. Install Python Development Tools

Quick install (all recommended tools):

pip install ruff black isort mypy bandit pytest pip-audit

Or install individually:

# Linting & Formatting
pip install ruff      # Fast linter and formatter
pip install black     # Code formatter
pip install isort     # Import sorter

# Type Checking
pip install mypy      # Static type checker

# Security
pip install bandit    # Security linter
pip install pip-audit # Dependency auditor

# Testing
pip install pytest    # Testing framework

3. Verify Installation

# Check Pyright
pyright --version

# Check Ruff
ruff --version

# Check Black
black --version

# Check Mypy
mypy --version

4. Create Project Configuration (Optional)

pyproject.toml:

[tool.pyright]
pythonVersion = "3.11"
typeCheckingMode = "standard"

[tool.ruff]
line-length = 88
target-version = "py311"

[tool.black]
line-length = 88
target-version = ['py311']

[tool.isort]
profile = "black"

5. Enable LSP in Claude Code

export ENABLE_LSP_TOOL=1

Verification

Test the LSP integration:

# Create a test file
echo 'def greet(name: str) -> str: return f"Hello, {name}"' > test_lsp.py

# Run type check
pyright test_lsp.py

# Clean up
rm test_lsp.py

Troubleshooting

Pyright not finding Python

Set the Python path in pyrightconfig.json:

{
    "pythonVersion": "3.11",
    "venvPath": ".",
    "venv": ".venv"
}

Virtual environment issues

Ensure your virtual environment is activated before running Claude Code:

source .venv/bin/activate
claude