René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"NewType does not subclass correctly","articleBody":"## Summary\r\nTypes created by `NewType` do not inherit any methods from their parents\r\n## To Reproduce\r\n```python\r\nfrom typing import NewType\r\n\r\nFoo = NewType(\"Foo\", dict)\r\n\r\nfoo: Foo = Foo({})\r\nfoo.\r\n```\r\n## Expected Output\r\n![image](https://user-images.githubusercontent.com/847422/46907124-dd563280-cf05-11e8-9dfd-62fac30210e6.png)\r\n## Actual Output\r\n![image](https://user-images.githubusercontent.com/847422/46907126-e21ae680-cf05-11e8-8a04-bf43e40d2b8b.png)\r\n\r\n## More Info\r\n[The documentation for NewType](https://docs.python.org/3.6/library/typing.html#newtype) states\r\n\r\n\u003e The static type checker will treat the new type as if it were a subclass of the original type.\r\n\r\nwhich is how Mypy behaves, but the language server treats `NewType` types as ...well, new types.\r\nI noticed this because [TypedDict](https://mypy.readthedocs.io/en/latest/more_types.html#typeddict) doesn't work either, and while writing that issue I discovered this.","author":{"url":"https://github.com/Lexicality","@type":"Person","name":"Lexicality"},"datePublished":"2018-10-13T15:42:18.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/254/python-language-server/issues/254"}