[issue25439] Add type checks to urllib.request.Request

[Martin Panter]

Martin Panter added the comment:

Type checking on the URL should be reasonably straightforward.

For the request data, the question is what types do we currently support? This may be a can of worms. We would have to be careful not to break existing use cases, even undocumented ones.

Looking at Issue 23740, the underlying “http.client” accepts a variety of data types (bytes, Latin-1 str, iterables, files), and this support varies depending if the Content-Length header is supplied. I don’t think all combinations work with urlopen(), but judging by Issue 5038, there is at least partial support for bytes-like, iterables, and file objects.

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nosy: +martin.panter

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