René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"drss returns system with wrong dt attribute","articleBody":"Revealed by @forgi86 in #586:\r\n\r\n```\r\n[ben@skylab:~]% python3                                                                                                                     [0]\r\nPython 3.8.8 (default, Feb 19 2021, 16:53:21) [GCC] on linux\r\nType \"help\", \"copyright\", \"credits\" or \"license\" for more information.\r\n\u003e\u003e\u003e import control\r\n\u003e\u003e\u003e control.__version__\r\n'0.9.0'\r\n\u003e\u003e\u003e sys = control.drss(1,2,3)\r\n\u003e\u003e\u003e sys.dt\r\n0\r\n\u003e\u003e\u003e \r\n```\r\n\r\nIt should return a system with `sys.dt == True` as \"discrete time with unspecified sampling period\".","author":{"url":"https://github.com/bnavigator","@type":"Person","name":"bnavigator"},"datePublished":"2021-03-24T17:15:02.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/587/python-control/issues/587"}