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Configuring SQLAlchemy with PostgreSQL on Heroku: A Quick Guide
Code November 08, 2024
python
Heroku's DATABASE_URL uses the older postgres:// scheme, which isn't compatible with the latest SQLAlchemy requirements. Starting with SQLAlchemy 1.4, postgres:// is considered deprecated and no longer supported. The explicit postgresql+psycopg2:// scheme is required.
Without this replacement, SQLAlchemy might throw an error like: