On Tue, Jan 1, 2013 at 5:41 AM, Antoine Pitrou wrote:
> Another possibility would be to allow passing None in values of the `headers` dict, in which case the given header wouldn't be send at all.

I agree that your solution is more scaling-friendly than the patch I originally submitted. But from another perspective, consider how alien it is to have to explicitly add keys set to None in the headers to get desired behavior.

Maybe there could be a single flag "strict" (or possibly a better name) that would indicate that the dict is in fact what I want to send and that it should not be modified? Or perhaps there should be "base_headers" list (not a dictionary) of header keys of which defaults to not inject?

Also, would making {"Accept-Encoding": None} send no "Accept-Encoding" header be backwards incompatible with the current behavior?