Switch to Python 3.x in Spyder
python, spyder
Solution
At the time this question was asked, Python 3 was not supported by Spyder (and this answer said so, giving some details of the then-incomplete porting efforts).
But that's not the case any longer! Recent builds of Spyder should work with Python 3. Check out the other answers for some links to places to get it from (though they may be out of date themselves by this point).
Problem
By default Spyder uses Python 2.7.2, and my question is: is there a way to set up Spyder so that it automatically uses Python 3.x? Thanks!