Question

我正在使用BigQuery客户端库在python中创建一个BigQuery客户端对象，通过在Google许可屏幕上进行身份验证。为了避免让用户自己授权两次，我想重新利用客户端对象进行两次查询。我试过以下：

1）使用pickle库的Pickle客户端对象。：

Error
  'Clients have non-trivial state that is local and unpickleable.',
_pickle.PicklingError: Pickling client objects is explicitly not supported.
Clients have non-trivial state that is local and unpickleable.

2）使用dill库腌制客户端对象。

Error
Clients have non-trivial state that is local and unpickleable.',
_pickle.PicklingError: Pickling client objects is explicitly not supported.
Clients have non-trivial state that is local and unpickleable.

3）创建了一个烧瓶会话并将客户端对象存储为会话变量。在这种情况下，对象将转换为带有错误消息的字典

'AttributeError: 'dict' object has no attribute 'query''

Answer 1

您无需使用oauth 2.0两次授权用户。创建令牌后，可以重复使用并刷新，更多here。

此外，如果您使用flask，文档中的example将显示如何在flask会话中存储凭据并在必要时多次访问它们：

  # Store credentials in the session.
  # ACTION ITEM: In a production app, you likely want to save these
  #              credentials in a persistent database instead.
  credentials = flow.credentials
  flask.session['credentials'] = credentials_to_dict(credentials)

和

  # Load credentials from the session.
  credentials = google.oauth2.credentials.Credentials(
      **flask.session['credentials'])

Python-Bigquery客户端库。持久化客户端对象以进行多个查询

1 个答案: