I'd like to ask you more questions No module named 'matplotlib'

I think it is better to install (and update) very popular packages such as matplotlib, pandas, and numpy in anaconda instead of pip.

There are many guides for installing anaconda and pip installing in the environment, but there are many cases where the conda package and pip package are twisted due to overlapping dependencies.

Packages installed with conda install and packages installed with pip install have functions, but the version and dependency are different. As you can see when you run the conda update, packages installed with conda update well on their own, but packages installed with pip are not well understood by conda.

If you need to install a pip in a conda, only the minor ones that are not in the conda.