Step-by-step – Matplotlib Installation in Debian Bullseye

Installing with System Python

2. 2. Installing PIP

   So now to Install PIP with conda
   Simply play:

   sudo apt install python3-pip

3. 3. Installing Matplotlib

   Then to Install Matplotlib on Debian
   The Recommend way is of Creating a separate Virtual Environment to house the components.
   With conda Package Manager like:

   conda create -n matplotlib

   And then to Activate it:

   conda activate matplotlib

   Now to Show the Scipy Info Notice:

   pip show matplotlib

   Again you can try directly to Import the Module in Python CLI with:

   python

   import matplotlib