So does this mean that since I'm better at Python than Javascript, I can now use this to make my web frontends in Python? Because that would be pretty sweet.
That would be great as one of the things that puts me off of front end development is lack of language choice. I adore Python as a language and it would certainly make a great choice for a front end language if supported. Maybe if this project takes off, browser vendors would ship a Python interpreter alongside the JS one. I'd bet that Apple, Google, Mozilla, etc. could make Python fast if they threw as much money at it as they do their JS interpreters. And PyPy is already pretty fast -- it's certainly way faster than JS engines were before V8 and JavaScriptCore hit the market.
Being a Python guy myself, the problem was never the lack of Python in the browser, it's always the lack of a Python ecosystem in the browser. If I'm going to use Python and awkwardly interface with JS, I might as well just use JS.
It makes me want to gouge my eyes out, but it's not really that hard to get productive in. CoffeeScript is even better, if you aren't averse to adding another dependency on top of everything else.
Pyjamas/pyjs is actually two parts: the transpiler and accompanying widget set. Only the latter is related to GWT. The transpiler can be used independently.
