gslib/kms_api.py [215:239]:
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          if 'error' in json_obj and 'message' in json_obj['error']:
            return json_obj['error']['message']
        except Exception:  # pylint: disable=broad-except
          # If we couldn't decode anything, just leave the message as None.
          pass

  def _GetAcceptableScopesFromHttpError(self, http_error):
    try:
      www_authenticate = http_error.response['www-authenticate']
      # In the event of a scope error, the www-authenticate field of the HTTP
      # response should contain text of the form
      #
      # 'Bearer realm="https://oauth2.googleapis.com/",
      # error=insufficient_scope,
      # scope="${space separated list of acceptable scopes}"'
      #
      # Here we use a quick string search to find the scope list, just looking
      # for a substring with the form 'scope="${scopes}"'.
      scope_idx = www_authenticate.find('scope="')
      if scope_idx >= 0:
        scopes = www_authenticate[scope_idx:].split('"')[1]
        return 'Acceptable scopes: %s' % scopes
    except Exception:  # pylint: disable=broad-except
      # Return None if we have any trouble parsing out the acceptable scopes.
      pass
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gslib/pubsub_api.py [169:193]:
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          if 'error' in json_obj and 'message' in json_obj['error']:
            return json_obj['error']['message']
        except Exception:  # pylint: disable=broad-except
          # If we couldn't decode anything, just leave the message as None.
          pass

  def _GetAcceptableScopesFromHttpError(self, http_error):
    try:
      www_authenticate = http_error.response['www-authenticate']
      # In the event of a scope error, the www-authenticate field of the HTTP
      # response should contain text of the form
      #
      # 'Bearer realm="https://oauth2.googleapis.com/",
      # error=insufficient_scope,
      # scope="${space separated list of acceptable scopes}"'
      #
      # Here we use a quick string search to find the scope list, just looking
      # for a substring with the form 'scope="${scopes}"'.
      scope_idx = www_authenticate.find('scope="')
      if scope_idx >= 0:
        scopes = www_authenticate[scope_idx:].split('"')[1]
        return 'Acceptable scopes: %s' % scopes
    except Exception:  # pylint: disable=broad-except
      # Return None if we have any trouble parsing out the acceptable scopes.
      pass
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