def from_stream(credential_filename):
        """Create a Credentials object by reading information from a file.

        It returns an object of type GoogleCredentials.

        Args:
            credential_filename: the path to the file from where the
                                 credentials are to be read

        Raises:
            ApplicationDefaultCredentialsError: raised when the credentials
                                                fail to be retrieved.
        """
        if credential_filename and os.path.isfile(credential_filename):
            try:
                return _get_application_default_credential_from_file(
                    credential_filename)
            except (ApplicationDefaultCredentialsError, ValueError) as error:
                extra_help = (' (provided as parameter to the '
                              'from_stream() method)')
                _raise_exception_for_reading_json(credential_filename,
                                                  extra_help,
                                                  error)
        else:
            raise ApplicationDefaultCredentialsError(
                'The parameter passed to the from_stream() '
                'method should point to a file.')
def from_stream(credential_filename):
        """Create a Credentials object by reading information from a file.

        It returns an object of type GoogleCredentials.

        Args:
            credential_filename: the path to the file from where the
                                 credentials are to be read

        Raises:
            ApplicationDefaultCredentialsError: raised when the credentials
                                                fail to be retrieved.
        """
        if credential_filename and os.path.isfile(credential_filename):
            try:
                return _get_application_default_credential_from_file(
                    credential_filename)
            except (ApplicationDefaultCredentialsError, ValueError) as error:
                extra_help = (' (provided as parameter to the '
                              'from_stream() method)')
                _raise_exception_for_reading_json(credential_filename,
                                                  extra_help,
                                                  error)
        else:
            raise ApplicationDefaultCredentialsError(
                'The parameter passed to the from_stream() '
                'method should point to a file.')
def from_stream ( credential_filename ) : if credential_filename and os . path . isfile ( credential_filename ) : try : return _get_application_default_credential_from_file ( credential_filename ) except ( ApplicationDefaultCredentialsError , ValueError ) as error : extra_help = ( ' (provided as parameter to the ' 'from_stream() method)' ) _raise_exception_for_reading_json ( credential_filename , extra_help , error ) else : raise ApplicationDefaultCredentialsError ( 'The parameter passed to the from_stream() ' 'method should point to a file.' )
Create a Credentials object by reading information from a file.

        It returns an object of type GoogleCredentials.

        Args:
            credential_filename: the path to the file from where the
                                 credentials are to be read

        Raises:
            ApplicationDefaultCredentialsError: raised when the credentials
                                                fail to be retrieved.
Create a Credentials object by reading information from a file .