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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_port_binding_level(filters):
 """Returns entries from PortBindingLevel based on the specified filters."""

    session = db.get_reader_session()
    with session.begin():
        return (session.query(ml2_models.PortBindingLevel).
                filter_by(**filters).
                order_by(ml2_models.PortBindingLevel.level).
                all())