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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"python-ivi/ivi/ivi.py, class PropertyCollection does not expect any arguments","articleBody":"Hi,\r\n\r\nsee: [ivi.py#L142](https://github.com/python-ivi/python-ivi/blob/cfa45ceade0758debe4bc24ba4c8195222cad1e2/ivi/ivi.py#L142): `PropertyCollection __init__` expects zero arguments.\r\n\r\nHowever, further below in [class IviContainer#L337](https://github.com/python-ivi/python-ivi/blob/cfa45ceade0758debe4bc24ba4c8195222cad1e2/ivi/ivi.py#L337), it is called with `*args and **kwargs`.\r\n\r\nThis causes a `TypeError` when called via the super constructor of any derived classe and when extra kwargs are proviced there.\r\n\r\nInterestingly, this error does only appear when the extra kwargs are consumed first `kwargs.pop()` in [class Driver#L1581](https://github.com/python-ivi/python-ivi/blob/cfa45ceade0758debe4bc24ba4c8195222cad1e2/ivi/ivi.py#L1581).\r\n\r\n==\u003e IIRC, this works only by accident, because the order in which the base classes are initialized is not defined programmatically and thus it is not assured that the kwargs.pop() comes before `PropertyCollections __init__`.\r\n\r\n==\u003e Fix: From [class IviContainer#L337](https://github.com/python-ivi/python-ivi/blob/cfa45ceade0758debe4bc24ba4c8195222cad1e2/ivi/ivi.py#L337) remove the *args and **kwargs:  `super(IviContainer, self).__init__()`\r\n","author":{"url":"https://github.com/ul-gh","@type":"Person","name":"ul-gh"},"datePublished":"2019-03-05T21:10:23.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/76/python-ivi/issues/76"}