Windows System Configuration Python environment, Python2 and Python3 coexistence

1. Download Python:

https://www.python.org/downloads/
Note: Select the desired version (Python2 or Python3, 32-bit or 64-bit)

2. Install Python:

Double-click to open the installation file and install it directly next.

3. Configure Environment variables:
　　　"Right-click" Properties, advanced system settings, environment variables, "system variables"--Input Python installation path

Configure Python2 and Python3 coexistence:

1. Installing Python2 and Python3

2. Modify the Python2 directory under Python.exe for Python2.exe, modify the Python2 directory Pythonw.exe for Pythonw2.exe

Copy Python3 directory under Python.exe for Python3.exe, copy python3 directory Pythonw.exe to Pythonw3.exe

Note: Because I mainly use python3 here, so modify the Python2 directory, if the main use Python2, you can modify the Python3 directory

3. Modify the environment variable path

C:\users\***\appdata\local\programs\python\python36

C:\users\***\appdata\local\programs\python\python36\scripts

C:\users\***\appdata\local\programs\python\python27

C:\users\***\appdata\local\programs\python\python27\scripts

4. Command line type Python-v view

Win+r→cmd→python-v

Win+r→cmd→python2-v

Win+r→cmd→python3-v

Windows System Configuration Python environment, Python2 and Python3 coexistence