Installing Python2 under Windows is compatible with the PYTHON3 development environment

Installing Python2 under Windows is compatible with the PYTHON3 development environment

1 downloads installed in different directories Python2 and Python3

https://www.python.org/downloads/

My directory is

D:\python3\;

D:\python2

2 Modifying environment variables

Computer--Attribute---Advanced system settings--environment variable---SELECT path--->

Add Variable Value contents D:\python3\Scripts\;D: \python3\;D: \python2\scripts\;D: \python2\ (Installation path for Python2 and Python3)

3 Modifying the application name

Change the Python.exe under Python2 to Python2

4 test whether the installation configuration was successful

Enter Python2 as Pyton2 version information under DOS command;

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Enter Python bit Python3 version information

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Installing Python2 under Windows is compatible with the PYTHON3 development environment