如何使用 peewee ORM 查找 mysql table 中存在的用户?

How to find of user exists in mysql table using peewee ORM?

我在 mysql、

中有这个 table
import peewee

class User(peewee.Model):

    username = peewee.Charfield(max_length=60)
    email = peewee.Charfield(max_length=300)

    def __repr__(self):
        return "<User: {}>".format(self.username)

当我为现有用户尝试以下代码时:

User.get(email="zhaochang@qq.com")

它returns <User: zhaochang>

但是对于不存在的随机 email/user User.get(email="some_random@email.com") 它会抛出错误:

用户不存在:Instance matching query does not exist:

SQL: SELECT 't1'.'id', 't1'.'email', 't1'.'username' FROM 'user' AS t1 WHERE ('t1'.'email' = %s) PARAMS: [u'some_random@email.com']

我期待 User.get 方法 return None。

当文档明确指出

时,您为什么期望该方法 return None

If no model is returned, a DoesNotExist is raised.

来源:http://docs.peewee-orm.com/en/latest/peewee/api.html#Model.get