ConnectionError：HTTPSConnectionPool：URL超过最大重试次数

Question

ConnectionError：HTTPSConnectionPool（host ='oauth2.googleapis.com'，端口= 443）：url：/ token超过了最大重试次数（由NewConnectionError（'：导致无法建立新连接：[WinError 10060]））

import os
import google.oauth2.credentials
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError
from google_auth_oauthlib.flow import InstalledAppFlow


CLIENT_SECRETS_FILE = "client_secret.json"

# This OAuth 2.0 access scope allows for full read/write access to the
# authenticated user's account and requires requests to use an SSL connection.
SCOPES = ['https://www.googleapis.com/auth/youtube.force-ssl']
API_SERVICE_NAME = 'youtube'
API_VERSION = 'v3'

def get_authenticated_service():
    credentials = None
    if os.path.exists('token.pickle'):
        with open('token.pickle', 'rb') as token:
            credentials = pickle.load(token)
    #  Check if the credentials are invalid or do not exist
    if not credentials or not credentials.valid:
        # Check if the credentials have expired
        if credentials and credentials.expired and credentials.refresh_token:
            # credentials.refresh(Request())
            print('error')
        else:
            flow = InstalledAppFlow.from_client_secrets_file(
                CLIENT_SECRETS_FILE, SCOPES)
            credentials = flow.run_console()

        # Save the credentials for the next run
        with open('token.pickle', 'wb') as token:
            pickle.dump(credentials, token)

    return build(API_SERVICE_NAME, API_VERSION, credentials = credentials)


if __name__ == '__main__':
    # When running locally, disable OAuthlib's HTTPs verification. When
    # running in production *do not* leave this option enabled.
    os.environ['OAUTHLIB_INSECURE_TRANSPORT'] = '1'
    keyword = 'python'
    print(keyword)
    service = get_authenticated_service()