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

[Nan Wu]

Nan Wu added the comment:

The do_request_() method which is defined in AbstractHTTPHandler seems not cover the check at least for the first case Ezio brought up. `unknown_open` has been called and gives out a relatively confusing message.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25439>
_______________________________________