SQLAlchemy tvinger in_() til at bruge bogstaver

I (på tidspunktet for skrivningen af ​​denne kommende) version 1.4 kan du bruge en udvidende bindparam med literal_execute=True for netop den effekt, du leder efter:

In [2]: class Foo(Model):
   ...:     id = Column(Integer, primary_key=True)
   ...:     data = Column(Integer)

In [3]: metadata.create_all()

In [4]: session.query(Foo).\
   ...:     filter(Foo.data.in_(
   ...:         bindparam('xs', range(10), expanding=True, literal_execute=True))).\
   ...:     all()
2019-09-07 20:35:04,560 INFO sqlalchemy.engine.base.Engine BEGIN (implicit)
2019-09-07 20:35:04,561 INFO sqlalchemy.engine.base.Engine SELECT foo.id AS foo_id, foo.data AS foo_data 
FROM foo 
WHERE foo.data IN (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)
2019-09-07 20:35:04,561 INFO sqlalchemy.engine.base.Engine ()
Out[4]: []