def exists(self, queue_name, timeout=None):
try:<EOL><INDENT>self.get_queue_metadata(queue_name, timeout=timeout)<EOL>return True<EOL><DEDENT>except AzureHttpError as ex:<EOL><INDENT>_dont_fail_not_exist(ex)<EOL>return False<EOL><DEDENT>
Returns a boolean indicating whether the queue exists.

:param str queue_name:
    The name of queue to check for existence.
:param int timeout:
    The server timeout, expressed in seconds.
:return: A boolean indicating whether the queue exists.
:rtype: bool