解决"wxPython在Mac下的64位支持"的问题

      用man python，可以找到

Like the version of Python, the python command can select between 32 and
     64-bit execution (when both are available).  Use:

           % defaults write com.apple.versioner.python Prefer-32-Bit -bool yes

      将这条语句加到~/.bash_profile，再source ~/.bash_profile就可以了。