The current Swift standard library is actually very small and limited, so Pythonic.swift is an attempt to extend the Swift language with a more comprehensive standard library that quite a few developers are already familiar with. I love both Python and Swift, so I thought why not let them marry? :-)
Yes, the project was updated to compile without warnings in Xcode6-Beta3 directly after the release. Please note that most of the changes introduced in Xcode6-Beta3 are breaking, so the project won't compile in the earlier betas any more. So go get Xcode6-Beta3 if you want to use Pythonic.swift :-)
Python's got a great standard library with lots of common functions. Many of these functions should be standard.