If I recall correctly, when Light Table was accepted into YC, Chris sent out an e-mail saying that Light Table was now guaranteed to happen and that if the only reason you donated was to make sure the project went through, you can feel free to retract the pledge (no money is withdrawn until the actual end date).

He also mentioned that with YC backing Python support was likely to happen sooner or later, but the $300k mark still puts Python in the "sooner" bucket.

Also, I'm not sure how it would work for people who donated solely in hopes that Python would be supported. Since they've long passed their actual kickstarter funding amount, does that leave ~$100k worth of donors that won't get what they tried to buy, but can't get their money refunded?

They'll probably get the money and we'll never know, but I would be interested to find out how they're planning to handle these issues.

I could have also imagined the whole thing, so while that may serve to answer your question, you shouldn't take only my word on it.