An API to manage most base collection types about typing_inspect HOT 6 CLOSED

But this would be a simple combination of get_args and get_origin. I think we should get better API for more general functions rather than focus on many specialized functions.

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Yet again there is something in pytypes I'd like to point out.
pytypes.get_iterable_itemtype might be of some help, not the entire solution to this request though.

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Thanks ! yes @ilevkivskyi you are right, but that might be a "frequent" specialized request. See the collections module: it is extremely useful, although specialized on collections. @Stewori I'll have a look

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@smarie it just occurred to me that pytypes.get_iterable_itemtype is only about iterable from collections, not about Iterable from typing. Regarding a generic subtype of Iterable from typing, pytypes also has a good (?) way to retrieve the item type, but that's not conveniently accessible via API right now IIRC. (We can maybe add such an API, it wouldn't be too hard using the already existing utilities. The question is more how such an API should exactly look like...)

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There are now functions in pytypes to accomplish this:

• pytypes.get_Generic_itemtype
• pytypes.get_Mapping_key_value
• pytypes.get_Generic_parameters
  While the purpose of the first two is hopefully obvious, the third retrieves the parameters of a generic, viewed as a specific superclass.

I suppose this essentially solves this issue, once the next pytypes version is released.

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OK, I think we can close this for now, since pytypes provide the functionality.

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