If you still want to use traditional python x-***.py or pip install *****
Please refer to this blog post:
https://blog.csdn.net/qiang12qiang12/article/details/53239866
The official method is introduced below. You do not need to modify any settings. Use it directly after installation:
Official solution
Python community: When we installed Python3 (>=3.3), the Python installation package actually installed a launcher py.exe in the system, which is placed under the folder C:\Windows\ by default. This launcher allows us to specify whether to use Python2 or Python3 to run the code.
py -2 ***. py
py -3 ***. py
If #! python2
or is added to #! python3
the code file, it means that the code file uses Python2 or Python3 to interpret and run. Then the command can be directly as
py ****. py
Use pip
py -2 -m pip 或 py -3 -m pip
Isn't it amazing! !