I installed python 3.2 and later installed python 2.7. Somehow IDLE, which I open by right-clicking on a python → Edit file using IDLE, uses python 2.7 instead of python 3.2.
It seems that python 2.7 has been installed by default with IDLE. Even if I changed the PATH environment variable in the window before installing back to python 3.2, the default python shell is still 2.7. I am sure there were no more python 2.7 in the way.
Later I need to remove python 2.7 and reinstall python 3.2.
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