如何解决使用atproto连接Bluesky时出现的ModelError？

我尝试用atproto连接Bluesky，代码如下：

bsky_handle = "_____.bsky.social"
bsky_password = "____-____-____-____"

from atproto import Client
bsky = Client()
bsky.login(bsky_handle, bsky_password)

（代码取自某GitHub仓库）

但执行最后一行代码时触发了以下错误：

Traceback (most recent call last):

  File ~\Anaconda3\anaconda3\lib\site-packages\atproto\xrpc_client\models\utils.py:87 in _get_or_create
    return model(**model_data)

  File ~\Anaconda3\anaconda3\lib\site-packages\pydantic\main.py:165 in __init__
    __pydantic_self__.__pydantic_validator__.validate_python(data, self_instance=__pydantic_self__)

ValidationError: 1 validation error for Response
emailConfirmed
  Extra inputs are not permitted [type=extra_forbidden, input_value=True, input_type=bool]
    For further information visit https://errors.pydantic.dev/2.3/v/extra_forbidden


The above exception was the direct cause of the following exception:

Traceback (most recent call last):

  Cell In[12], line 2
    bsky.login(bsky_handle, bsky_password)

  File ~\Anaconda3\anaconda3\lib\site-packages\atproto\xrpc_client\client\client.py:74 in login
    session = self._get_and_set_session(login, password)

  File ~\Anaconda3\anaconda3\lib\site-packages\atproto\xrpc_client\client\client.py:37 in _get_and_set_session
    session = self.com.atproto.server.create_session(

  File ~\Anaconda3\anaconda3\lib\site-packages\atproto\xrpc_client\namespaces\sync_ns.py:1757 in create_session
    return get_response_model(response, models.ComAtprotoServerCreateSession.Response)

  File ~\Anaconda3\anaconda3\lib\site-packages\atproto\xrpc_client\models\utils.py:98 in get_response_model
    return get_or_create(response.content, model)

  File ~\Anaconda3\anaconda3\lib\site-packages\atproto\xrpc_client\models\utils.py:64 in get_or_create
    raise e

  File ~\Anaconda3\anaconda3\lib\site-packages\atproto\xrpc_client\models\utils.py:57 in get_or_create
    model_instance = _get_or_create(model_data, model, strict=strict)

  File ~\Anaconda3\anaconda3\lib\site-packages\atproto\xrpc_client\models\utils.py:89 in _get_or_create
    raise ModelError(str(e)) from e

ModelError: 1 validation error for Response
emailConfirmed
  Extra inputs are not permitted [type=extra_forbidden, input_value=True, input_type=bool]
    For further information visit https://errors.pydantic.dev/2.3/v/extra_forbidden 

问题原因 #

这不是你的操作错误，是atproto库的模型定义与Bluesky服务器返回的响应不匹配导致的。Bluesky服务器返回的会话响应中包含了emailConfirmed字段，但库内的Response模型未定义该字段，且开启了严格校验规则（不允许额外字段），因此触发了Pydantic的ValidationError。

解决方法 #

• 优先升级atproto库：开发者大概率已修复该字段匹配问题，执行以下命令更新库：

  pip install --upgrade atproto
  

• 临时修改模型校验规则（仅当升级无效时使用）：
  找到atproto库中ComAtprotoServerCreateSession.Response模型的定义文件（通常路径为site-packages/atproto/xrpc_client/models/com/atproto/server/create_session.py），修改模型的配置，让Pydantic忽略额外字段：

  class Response(BaseModel):
      access_jwt: str
      refresh_jwt: str
      handle: str
      did: str
      email_confirmed: Optional[bool] = Field(default=None, alias='emailConfirmed')
      
      model_config = ConfigDict(extra='ignore')
  

  注意：修改库文件是临时方案，后续升级库会覆盖该修改，优先推荐升级库解决。

内容的提问来源于stack exchange，提问作者François M.