Hello,

I have a sqlalchemy model to which i want to add a column using alembic :

from sqlalchemy_utils import UUIDType
new_column = Column(UUIDType, primary_key=True)

When i run alembic revision --autogenerate, it generates a migration script 
but when i run alembic upgrade head it throws the error below:

    op.add_column('my_model', sa.Column('my_model_uuid', 
sa.UUIDType(length=16), nullable=False))
AttributeError: 'module' object has no attribute 'UUIDType'

How can i configure alembic to generate migration scripts using data types 
from sqlalchemy_utils ?

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