Sqlalchemy Issues With Foreign Keys

I am getting the error Could not parse rfc1738 URL from string 'MACHINE_IE' When I attempt to import the following class MACHINE(declarative_base()): __tablename__ = 'MACHIN

Solution 1:

You are using multiple instances of Base. You should be doing:

Base = declarative_base()

class MACHINE(Base):
    ...

class IE(Base):
    ...

...