sqlacodegen

How to run sqlacodegen? Question: I’m trying to run sqlacodegen to create a SQLAlchemy model from an existing PostgreSQL database. It won’t run. When I type sqlacodegen –help I get: Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: bad operand type for unary -: ‘_Helper’ Basic instructions are here. How do …