kennethreitz/requests — pull request #2222 by blueyed (2014-09-12 01:15:37+00:00)
Title: TBD: MissingSchema not raised for `localhost:port`.

In b149be5d `PreparedRequest` was made to skip `parse_url` for e.g.
`$HOST:$PORT`, which results in `MissingSchema` not being raised for
`localhost:3128`.