Python Support

Following the documentation at https://pulp-python.readthedocs.io/en/latest/workflows/upload.html , I got the error pasted below. Also, the documentation isn't very clear about the type of content that can be uploaded, using only the generic term 'file' in the example.

(pulp) [vagrant@pulp3-source-fedora31 pulp_python]$ http POST $BASE_ADDR/pulp/api/v3/content/python/ artifact=http://localhost:24817/pulp/api/v3/artifacts/f6b2f040-654f-4632-b8db-26f7cb7f13af/ filename=setup.py
HTTP/1.1 404 Not Found
Connection: keep-alive
Content-Length: 77
Content-Type: text/html
Date: Thu, 28 May 2020 13:45:48 GMT
Server: nginx/1.18.0
X-Frame-Options: SAMEORIGIN

<h1>Not Found</h1><p>The requested resource was not found on this server.</p>