PassiveDefault not working in 0.4

[Former user]

PassiveDefault not being processed into default column on insert.

http://dpaste.com/62726/ http://dpaste.com/62728/

[jek]

from the dpaste: Column(..., default=PassiveDefault('')) is invalid. PassiveDefault('') must be passed in to Column positionally as in:

Column(u'col2', PGString(length=30, convert_unicode=False, assert_unicode=None),
       primary_key=False, nullable=False, PassiveDefault('')))

and

http://www.sqlalchemy.org/docs/04/metadata.html#metadata_defaults_passive