# Core backtesting dependencies
pandas>=1.3.0
numpy>=1.20.0
backtrader>=1.9.74.122
yfinance>=0.2.0

# Optional: for visualizations
matplotlib>=3.3.0
seaborn>=0.11.0

# Optional: for Google Drive integration
google-auth-oauthlib>=0.4.6
google-auth-httplib2>=0.1.0
google-api-python-client>=2.0.0
PyDrive2>=1.10.0

# Optional: for Alpaca integration
alpaca-trade-api>=3.0.0

# Optional: for advanced analysis
scipy>=1.7.0

# Development/testing
pytest>=6.0.0
black>=21.0
flake8>=3.9.0