我正在嘗試將以下命令從 CLI（有效）轉換為 python，但遇到一些問題。curl -H "Authorization: Bearer $(gcloud auth print-identity-token)" SERVICE_URL問題是我無法使用應用程序默認本地憑據令牌請求有效的承載來向 Google Cloud Run 發出授權請求。如果我從 CLI 生成 Bearer 令牌gcloud auth print-identity-token并在 python 請求中使用它，一切正常request_url = 'https://<my endpoint>'identity_token = '<>' # response of gcloud auth print-identity-token)header= {'Authorization': f'Bearer {identity_token}'}requests.get(url=request_url, headers=receiving_service_headers)從谷歌身份驗證文檔中，我了解到 Cloud Run 通信基于支持模擬身份驗證的身份令牌，但我無法生成有效的憑據。from google.auth import impersonated_credentials, defaultfrom google.auth.transport.requests import AuthorizedSessionrequest_url = 'https://<my endpoint>'source_credentials, project = default()creds = impersonated_credentials.IDTokenCredentials(? ? source_credentials,? ? target_audience=request_url)authed_session = AuthorizedSession(creds)resp = authed_session.get(request_url)print(resp)bui 我收到以下錯誤google.auth.exceptions.GoogleAuthError: Provided Credential must be impersonated_credentials謝謝