Python multiple versions

2018-12-29 本文已影响3人 JaedenKil

We can install both python2 and python3 in windows.
For install, I got C:\Tools\Python27 and C:\Tools\Python37.

In Environment Variables - System Variables - Path, add C:\Tools\Python27\, C:\Tools\Python27\Scripts, C:\Tools\Python37\ and C:\Tools\Python37\Scripts.
Rename python.exe in python2 to python2.exe, rename python.exe in python3 to python3.exe.
Us python2 to stand for python 2.x, and python3 to stand for python 3.x.
Use python2 -m pip install xxx to install lib for python2.x, use python3 -m pip install xxx to install lib for python3.x.