ProgrammerSought

A good environment is conducive to efficient production.
Error when using jupyterthemes:
At that time, the numpy environment was (1.19.5) and I found a lot of blogs, all of which are old and old posts, saying that if there is a problem with numpy, of course I am stupid
to reduce numpy to 1.6 , so I plan to do it again.
Create an environment, jupyterthemes can be done, but after a long time jupyter can't be installed.
Since the numpy you just installed is fine, just update numpy and you should be fine:

python -m pip install --upgrade numpy

Wuhu takes off! !