Content-Type in multipart/form-data POST data

[tobru]

In https://github.com/MechanicalSoup/MechanicalSoup/blob/master/mechanicalsoup/browser.py#L203 the 2-tuple of the files parameter ('filename', fileobj) is used.

I have a use case where I have to be explicit about the Content-Type in the multipart part of the POST request, otherwise the server doesn't accept the file. By directly using requests I could use the 3-tuple parameter ('filename', fileobj, 'content_type'), which I've tried and works.

How can I do that with MechanicalSoup StatefulBrowser?

[moy]

I don't think there's an easy way other than patching MechanicalSoup, but patches are welcome if it solves a problem.

I'm wondering how this content type can be computed. Just guessed from the local file content? Set by the programmer from the MechanicalSoup API (probably the best option to be realiable), e.g. by allowing browser["file-field"] = (filename, content-type)?

[tobru]

Just guessed from the local file content?

That would be one possibility, yes.

Set by the programmer from the MechanicalSoup API (probably the best option to be realiable), e.g. by allowing browser["file-field"] = (filename, content-type)

That would be perfectly fine and absolutely enough for my use-case. This could even be the preferred way over automagically detecting the file type as this could go wrong and then you're out of luck again. I'm a fan of being able to specify things explicitely.