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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Issue using Protocol as a base class with Python 3.5.2","articleBody":"Python: 3.5.2\r\nOS: macOS Mojave\r\n\r\nSeems that `_generic_new` implementation from `typing_extensions` module is outdated or incorrect. When `typing_extensions` relies on its own implementation of `_generic_new` I get the following error.\r\n\r\nScript to reproduce:\r\n```\r\nimport abc\r\nfrom typing_extensions import Protocol, runtime_checkable\r\n\r\n\r\n@runtime_checkable\r\nclass Proto(Protocol):\r\n    @abc.abstractmethod\r\n    def foo(self):\r\n        pass\r\n\r\n\r\nclass SomeClass(Proto):\r\n    def __init__(self, some_arg):\r\n        pass\r\n\r\n    def foo(self):\r\n        return 5\r\n\r\n\r\nx = SomeClass(3)\r\n```\r\n\r\nTraceback:\r\n```\r\nTraceback (most recent call last):\r\n  File \"/Users/dikobraz/repro.py\", line 20, in \u003cmodule\u003e\r\n    x = SomeClass(3)\r\n  File \"/Users/dikobraz/env-py-3.5-tf-2/lib/python3.5/site-packages/typing_extensions.py\", line 1357, in __new__\r\n    return _generic_new(cls.__next_in_mro__, cls, *args, **kwds)\r\n  File \"/Users/dikobraz/env-py-3.5-tf-2/lib/python3.5/site-packages/typing_extensions.py\", line 87, in _generic_new\r\n    return base_cls.__new__(cls, *args, **kwargs)\r\nTypeError: object() takes no parameters\r\n```\r\n\r\nIn debugger:\r\n\u003cimg width=\"1035\" alt=\"Screen Shot 2020-06-23 at 6 47 37 PM\" src=\"https://user-images.githubusercontent.com/2404864/85487864-381caa00-b582-11ea-94d1-15b79656ad7e.png\"\u003e","author":{"url":"https://github.com/Slonegg","@type":"Person","name":"Slonegg"},"datePublished":"2020-06-24T01:47:54.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/734/typing/issues/734"}