Mudar a vers√£o do software no OSX com Homebrew

brew versions python3
3.2.3 git checkout 83b3771 /usr/lo...
3.2.2 git checkout f3408c9 /usr/lo...
3.2.1 git checkout 949d521 /usr/lo...
3.2 git checkout 83ed494 /usr/lo...
...
brew
switch python3 3.2.2

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