Beginning with Python 2.7.9 and 3.4.3, distutils uploads to chishop (https://pypi.python.org/pypi/chishop) now fail with a 501 NOT IMPLEMENTED. This error looks very similar to the error that Twine triggered in https://github.com/pypa/twine/issues/27.

I acknowledge that chishop is old and probably abandoned, but I also expect that a minor update (such as 3.4.2 to 3.4.3) should not break. I understand that 2.7.9 may have special consideration in this regard, so I'll focus on 3.4.3.

I expect these changes in protocol may also affect other HTTP services, though it may be isolated to distutils uploads.

Donald, can you speak to changes in Python 3.4.3 that might have behavior in common with Twine that would have affected distutils uploads?