Install Matplotlib and bug resolution in the specified environment

To be in anaconda Install in the specified environment matplotlib, Start by opening anaconda prompt function

conda info -e

see anaconda All current environments in , then

activate  Target environment name 

Note the contents in parentheses before the path , That's it anacoda Command execution environment name , All your commands will be executed in this environment .

conda install matplolib

install matplotlib, You can also add the version number after it

conda install matplolib-?.?.?

Problems I encountered during installation , First, first bug yes
PermissionError: [Errno 13] Permission denied
The third way I solved it , I was on when I installed pycharm, Then I put pycharm It's off , There are other reasons to continue the installation .
the second bug It's not actually installation matplotlib Why , In the installation matplotlib When , Need a lot of auxiliary packages , One of them is called qt My bag , As for which package it is , You can view the progress bar during the installation of the package , In which bag has a problem, it will get stuck in that position , Then look at the specific bug Why , I did bug See the picture below , Basically the same
REEOR conda.core.link:_execute(700)
Specific to see install qt Always fail

Here's a hint link:_execute, It reminds me if conda The source of the problem , After switching several sources , Find out bug There is still , And the error reports are the same , Then I found the blog above
I am here conda Internal execution

set PATH=%PATH%;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;

bug solve ,matplotlib Installation successful , As for why it was solved , We don't know