Step-by-step – Matplotlib Installation in Slackware Linux

Installing with System Python

2. 2. Installing PIP

   How to Install Python PIP in Slackware GNU/Linux

   PIP Slackware Installation Guide

   Slackware PIP Setup

3. 3. Installing Matplotlib

   Then to Install Matplotlib on Slackware
   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