So how can a public service help you to develop a trading system with a difficult to learn language like python when every little detail has to be programmed? Maybe it is a wonderful system but traders should devote their time coming up with ideas to test, not with programming them. Tradestation is a good service for traders. If no account is required, a cheap but very powerful software like Amibroker is all you need. Why going public? If one cannot afford the $200 expense for Amibroker or some other backtesting platform then better forget about trading. The more secretive one is with his development, the better the chances of making money.
Python is one of the easiest computer languages to learn (it is often used for intro to programming courses). Any broker or provider you use is going to have pros and cons, but in everyone of these you're going to have to learn how to tell a computer what your idea is (explaining a trade idea to a piece of silicon that has zero intuition can be tricky)
Use these people. I used them. Cheap and professional if you find the right person. https://www.elance.com/
I have purchased a few ATS in my day and most worked for 3 months to a year, and then died. The best ATS are the ones you build yourself and I don't plan on buying any ATS now that I have my own.
Thank you guys for your suggestion, it looks like I need to open another broker first, I used IB and only IB for many years, thanks again! http://www.elitetrader.com/vb/images/smilies/smile.gif