def _implicit_credentials_from_files():
        """Attempts to get implicit credentials from local credential files.

        First checks if the environment variable GOOGLE_APPLICATION_CREDENTIALS
        is set with a filename and then falls back to a configuration file (the
        "well known" file) associated with the 'gcloud' command line tool.

        Returns:
            Credentials object associated with the
            GOOGLE_APPLICATION_CREDENTIALS file or the "well known" file if
            either exist. If neither file is define, returns None, indicating
            no credentials from a file can detected from the current
            environment.
        """
        credentials_filename = _get_environment_variable_file()
        if not credentials_filename:
            credentials_filename = _get_well_known_file()
            if os.path.isfile(credentials_filename):
                extra_help = (' (produced automatically when running'
                              ' "gcloud auth login" command)')
            else:
                credentials_filename = None
        else:
            extra_help = (' (pointed to by ' + GOOGLE_APPLICATION_CREDENTIALS +
                          ' environment variable)')

        if not credentials_filename:
            return

        # If we can read the credentials from a file, we don't need to know
        # what environment we are in.
        SETTINGS.env_name = DEFAULT_ENV_NAME

        try:
            return _get_application_default_credential_from_file(
                credentials_filename)
        except (ApplicationDefaultCredentialsError, ValueError) as error:
            _raise_exception_for_reading_json(credentials_filename,
                                              extra_help, error)
def _implicit_credentials_from_files():
        """Attempts to get implicit credentials from local credential files.

        First checks if the environment variable GOOGLE_APPLICATION_CREDENTIALS
        is set with a filename and then falls back to a configuration file (the
        "well known" file) associated with the 'gcloud' command line tool.

        Returns:
            Credentials object associated with the
            GOOGLE_APPLICATION_CREDENTIALS file or the "well known" file if
            either exist. If neither file is define, returns None, indicating
            no credentials from a file can detected from the current
            environment.
        """
        credentials_filename = _get_environment_variable_file()
        if not credentials_filename:
            credentials_filename = _get_well_known_file()
            if os.path.isfile(credentials_filename):
                extra_help = (' (produced automatically when running'
                              ' "gcloud auth login" command)')
            else:
                credentials_filename = None
        else:
            extra_help = (' (pointed to by ' + GOOGLE_APPLICATION_CREDENTIALS +
                          ' environment variable)')

        if not credentials_filename:
            return

        # If we can read the credentials from a file, we don't need to know
        # what environment we are in.
        SETTINGS.env_name = DEFAULT_ENV_NAME

        try:
            return _get_application_default_credential_from_file(
                credentials_filename)
        except (ApplicationDefaultCredentialsError, ValueError) as error:
            _raise_exception_for_reading_json(credentials_filename,
                                              extra_help, error)
def _implicit_credentials_from_files ( ) : credentials_filename = _get_environment_variable_file ( ) if not credentials_filename : credentials_filename = _get_well_known_file ( ) if os . path . isfile ( credentials_filename ) : extra_help = ( ' (produced automatically when running' ' "gcloud auth login" command)' ) else : credentials_filename = None else : extra_help = ( ' (pointed to by ' + GOOGLE_APPLICATION_CREDENTIALS + ' environment variable)' ) if not credentials_filename : return # If we can read the credentials from a file, we don't need to know # what environment we are in. SETTINGS . env_name = DEFAULT_ENV_NAME try : return _get_application_default_credential_from_file ( credentials_filename ) except ( ApplicationDefaultCredentialsError , ValueError ) as error : _raise_exception_for_reading_json ( credentials_filename , extra_help , error )
Attempts to get implicit credentials from local credential files.

        First checks if the environment variable GOOGLE_APPLICATION_CREDENTIALS
        is set with a filename and then falls back to a configuration file (the
        "well known" file) associated with the 'gcloud' command line tool.

        Returns:
            Credentials object associated with the
            GOOGLE_APPLICATION_CREDENTIALS file or the "well known" file if
            either exist. If neither file is define, returns None, indicating
            no credentials from a file can detected from the current
            environment.
Attempts to get implicit credentials from local credential files .