orm.py 文件源码

def coerce(self, field_type):
        coercions = {
            "IntField": int,
            "BooleanField": bool,
            "FloatField": float,
            "DecimalField": decimal.Decimal,
            "ObjectIdField": ObjectId
        }
        if sys.version_info >= (3, 0):
            return coercions.get(field_type, str)
        else:
            return coercions.get(field_type, unicode)