使用带有gspread的google-auth时,“'凭据'对象没有属性'access_token'”

时间:2018-07-31 16:32:42

标签: python google-api google-authentication oauth2client

我想使用gspread模块从Python编辑Google表格。 setup instructions包含以下示例:

import gspread
from oauth2client.service_account import ServiceAccountCredentials

scope = ['https://spreadsheets.google.com/feeds',
         'https://www.googleapis.com/auth/drive']

credentials = ServiceAccountCredentials.from_json_keyfile_name('gspread-april-2cd … ba4.json', scope)

gc = gspread.authorize(credentials)

但是,根据https://pypi.org/project/oauth2client/oauth2client库已过时。因此,我尝试使用google-auth对此进行如下修改:

import gspread
from google.oauth2 import service_account

credentials = service_account.Credentials.from_service_account_file(
    'my_client_secrets.json')

scoped_credentials = credentials.with_scopes(
    ['https://www.googleapis.com/auth/spreadsheets'])

gc = gspread.authorize(scoped_credentials)

不幸的是,我遇到了以下错误:

(lucy-web-CVxkrCFK) bash-3.2$ python nps.py
Traceback (most recent call last):
  File "nps.py", line 54, in <module>
    gc = gspread.authorize(scoped_credentials)
  File "/Users/kurtpeek/.local/share/virtualenvs/lucy-web-CVxkrCFK/lib/python3.7/site-packages/gspread/__init__.py", line 38, in authorize
    client.login()
  File "/Users/kurtpeek/.local/share/virtualenvs/lucy-web-CVxkrCFK/lib/python3.7/site-packages/gspread/client.py", line 46, in login
    if not self.auth.access_token or \
AttributeError: 'Credentials' object has no attribute 'access_token'

如果我进入调试器,我确实会看到credentials具有token属性,但没有access_token属性:

> /Users/kurtpeek/Documents/Dev/lucy2/lucy-web/scripts/nps.py(54)<module>()
     53 import ipdb; ipdb.set_trace()
---> 54 gc = gspread.authorize(scoped_credentials)
     55 

ipdb> type(credentials)
<class 'google.oauth2.service_account.Credentials'>
ipdb> type(scoped_credentials)
<class 'google.oauth2.service_account.Credentials'>
ipdb> dir(credentials)
['__abstractmethods__', '__class__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', '_abc_impl', '_additional_claims', '_from_signer_and_info', '_make_authorization_grant_assertion', '_project_id', '_scopes', '_service_account_email', '_signer', '_subject', '_token_uri', 'apply', 'before_request', 'expired', 'expiry', 'from_service_account_file', 'from_service_account_info', 'has_scopes', 'project_id', 'refresh', 'requires_scopes', 'scopes', 'service_account_email', 'sign_bytes', 'signer', 'signer_email', 'token', 'valid', 'with_claims', 'with_scopes', 'with_subject']

Credentials生成的google-authoauth2client生成的对象不同吗?

4 个答案:

答案 0 :(得分:3)

一年半以后,在完全相同的情况下,我发现这对我有用:

import gspread
from google.oauth2 import service_account
from google.auth.transport.requests import AuthorizedSession

credentials = service_account.Credentials.from_service_account_file(
    'your_key_file.json')

scoped_credentials = credentials.with_scopes(
        ['https://spreadsheets.google.com/feeds',
         'https://www.googleapis.com/auth/drive']
        )

gc = gspread.Client(auth=scoped_credentials)
gc.session = AuthorizedSession(scoped_credentials)
sheet = gc.open_by_key('key_in_sharelink')
print(sheet.title)

解决方案改编自gspread github中的this postgoogle-auth user guide

答案 1 :(得分:2)

根据gspread文档,gspread.authorize方法仅支持由oauth2client library创建的凭证对象。要使用新的google-auth,gspread应该添加对此的支持。

如果您不想使用已弃用的oauthclient2,则可能的工作方式是利用authlib类的session参数来使用gspread.Client。有一个不错的教程,介绍如何here

答案 2 :(得分:0)

作为临时解决方案,您可以创建一个继承凭证的新类,并添加一个新的access_token属性,该属性镜像凭证中的令牌。然后将其传递到gspread.authorize,它应该可以工作。

#Create the new class
class fixed_creds(service_account.Credentials):
    def __init__(self, creds):
    self.access_token = creds.token

# create new credential object with the access_token
gcreds = fixed_creds(credentials)

# pass new credentials into gspread
sheets = gspread.authorize(gcreds)

# create a new sheet to test it
new_sheet = sheets.create('TestSheet')

# give yourself permission to see the new sheet
sheets.insert_permission(
    new_sheet.id,
    'youremail@yourdomain.com',
    perm_type='user',
    role='writer'
)

答案 3 :(得分:0)

汤姆提供的创可贴修复不适用于我,因为token最初是None在Google OAuth2库中。这是我的创可贴修复程序:

import gspread
import google.auth.transport.requests
from google.oauth2 import service_account
from oauth2client.service_account import ServiceAccountCredentials

class OAuth2ServiceAccountFromGoogleOAuth2(ServiceAccountCredentials):  # Hack based upon https://stackoverflow.com/questions/51618127/credentials-object-has-no-attribute-access-token-when-using-google-auth-wi
    def __init__(self, google_oauth2_credentials):
        self.google_oauth2_credentials = google_oauth2_credentials
        self.access_token = google_oauth2_credentials.token

    def refresh(self, http):
        if self.access_token is None:
            request = google.auth.transport.requests.Request()
            self.google_oauth2_credentials.refresh(request)
            self.access_token = self.google_oauth2_credentials.token
        #end if

        print(f'access token in {self.access_token}')
    #end def
#end class

with open("credentials.json") as gs_key_file:
    google_credentials = service_account.Credentials.from_service_account_info(json.loads(gs_key_file.read()), scopes=['https://www.googleapis.com/auth/spreadsheets'])
gclient = gspread.authorize(OAuth2ServiceAccountFromGoogleOAuth2(google_credentials))