在windows中同時安裝兩個版本的python,並用Eclipse夠編譯

1.在windows中分別下載並安裝Python2.7和Python3.8 2.分別在path中設置環境變量，C:\Python27;C:\Python27\Scripts;C:\Python38;C:\Python38\Scripts; 3,分別在C:\Python27和C:\Python38中將python.exe和pythonw.exe改爲python2.exe和pythonw3.exe 4

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