constraints.txt

# Constraints to speed pip dependency resolution on CI / Render.
# These are conservative pinned versions known to work together on Python 3.11.
# Keep this file updated when you upgrade major libraries.

# Core web/runtime
fastapi==0.116.1
uvicorn==0.35.0
pydantic==2.11.7
## NOTE: fastapi 0.116.x requires starlette >=0.47.0,<0.48.0; pin to latest compatible 0.47.x
starlette==0.47.3
anyio==4.10.0

# HTTP
urllib3==2.5.0
charset-normalizer==3.4.3
idna==3.10
requests==2.32.5

# Data stack
pandas==2.3.2
matplotlib==3.10.5
seaborn==0.13.2
scikit-learn==1.7.1
statsmodels==0.14.5
numpy==2.3.1

# IO / scraping
beautifulsoup4==4.12.3
lxml==6.0.1

# Finance libs
yfinance==0.2.66
stockdex==1.2.1
yahoofinancials==1.20
alpha_vantage==3.0.0
pandas-datareader==0.10.0
fredapi==0.5.2
quantstats==0.0.77

# SQL / DB
sqlalchemy==2.0.43
alembic==1.16.5
psycopg2-binary==2.9.10

# Django
django==5.1.11
django-environ==0.12.0

# Servers
gunicorn==23.0.0

# Misc
pip-audit==2.9.0
pillow==11.3.0
redis==6.4.0
celery==5.5.3

# Notes:
# - When installing with constraints use: python -m pip install -r requirements.txt -c constraints.txt
# - Prefer using `requirements.lock` for deterministic builds in CI/Render. To regenerate:
#   python -m venv .venv
#   .venv/bin/python -m pip install --upgrade pip setuptools wheel
#   .venv/bin/python -m pip install -r requirements.txt -c constraints.txt
#   .venv/bin/python -m pip freeze > requirements.lock