AttributeError: 'dict' object has no attribute '_set_parent_with_dispatch' - SQLalchemy

11 Dec 2013

The documentation says: "Keyword arguments can be specified by specifying the last argument as a dictionary"

So you will need to change this:

__table_args__ = (

{'sqlite_autoincrement': True},

            UniqueConstraint('filename', 'path')

            )

to this:

__table_args__ = (
            UniqueConstraint('filename', 'path'),
            {'sqlite_autoincrement': True}

            )