Jupyter中出现ModuleNotFoundError: No module named ‘matplotlib‘的解决办法

jupyter运行错误显示

ModuleNotFoundError: No module named 'matplotlib

(base) C:\Users\Administrator>activate tensorflow
(tensorflow) C:\Users\Administrator>pip install matplotlib
Collecting matplotlib
  Using cached matplotlib-3.3.2-cp36-cp36m-win_amd64.whl (8.5 MB)
Collecting kiwisolver>=1.0.1
  Using cached kiwisolver-1.2.0-cp36-none-win_amd64.whl (57 kB)
Requirement already satisfied: numpy>=1.15 in d:\anaconda3\envs\tensorflow\lib\site-packages (from matplotlib) (1.19.2)
Collecting cycler>=0.10
  Using cached cycler-0.10.0-py2.py3-none-any.whl (6.5 kB)
Requirement already satisfied: python-dateutil>=2.1 in d:\anaconda3\envs\tensorflow\lib\site-packages (from matplotlib) (2.8.1)
Requirement already satisfied: pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=2.0.3 in d:\anaconda3\envs\tensorflow\lib\site-packages (from matplotlib) (2.4.7)
Requirement already satisfied: pillow>=6.2.0 in d:\anaconda3\envs\tensorflow\lib\site-packages (from matplotlib) (7.2.0)
Requirement already satisfied: certifi>=2020.06.20 in d:\anaconda3\envs\tensorflow\lib\site-packages (from matplotlib) (2020.6.20)
Requirement already satisfied: six in c:\users\administrator\appdata\roaming\python\python36\site-packages (from cycler>=0.10->matplotlib) (1.14.0)
Installing collected packages: kiwisolver, cycler, matplotlib
Successfully installed cycler-0.10.0 kiwisolver-1.2.0 matplotlib-3.3.2

再次运行程序，完美运行。