# Python Development Skill

## Installed
- Python 3.12
- Python IDLE (idle-python3.12)

## Common Commands

### Virtual Environments
```bash
python3 -m venv venv          # Create venv
source venv/bin/activate      # Activate venv
pip install package            # Install package
pip freeze > requirements.txt  # Save deps
deactivate                    # Deactivate
```

### Common Tools
```bash
pip install -U pip           # Upgrade pip
pip install requests          # HTTP library
pip install flask            # Web framework
pip install django           # Full framework
pip install pytest           # Testing
pip install black            # Formatter
pip install ruff             # Linter
```

### Run Python
```bash
python script.py            # Run script
python -m http.server 8000  # HTTP server
python -c "print('hi')"    # One-liner
```

### Docker for Python
```dockerfile
FROM python:3.12-slim
WORKDIR /app
COPY requirements.txt .
RUN pip install -r requirements.txt
COPY . .
CMD ["python", "app.py"]
```