Problem z okreslaniem kolumn na bazie listy stringów

fragment_models.py

(...)
class Character(Base):

    __tablename__ = 'characters'

    uid = Column(Integer, primary_key=True)
    session = Column(Integer, ForeignKey('sessions.uid'))
    created = Column(DateTime, default=datetime.datetime.utcnow)

    name = Column(Unicode(255))

    #  Body health
    for part in BODY.keys():
        Column(part, Integer)

    #  Stats
    for stat in STATS.keys():
        Column('stat_' + stat, Integer)

    #  Skills
    for skill in SKILLS.keys():
        Column('skill_' + skill, Integer)

(...)