def add_dynamics(cls):
    cur = DbProvider.get_cursor(dict_cursor=True)
    cur.execute("""SELECT COLUMN_NAME
                 FROM INFORMATION_SCHEMA.COLUMNS
                 WHERE TABLE_SCHEMA = 'my_db_name' AND TABLE_NAME = 'synchro_session';""")
    res = cur.fetchall()
    column_names = [c['COLUMN_NAME'] for c in res]
    def fieldmethod(self):
        cur = DbProvider.get_cursor(dict_cursor=True)
        cmd = "SELECT `{}` FROM `synchro_session` WHERE `city`='{}';".format(fieldmethod.__name__, self.office_id)
        cur.execute(cmd)
        return cur.fetchone()[fieldmethod.__name__]
    
    for name in column_names:   # создаю методы и аттачу к классу
        f = fieldmethod
        f.__doc__ = "docstring for {}".format(name)
        f.__name__ = name
        setattr(cls, f.__name__, f)
class SynchroSession(object):
    def __init__(self, office_id):
        add_dynamics(SynchroSession)