pipInstall -- install a Python package

i1 : loadPackage("Python", Configuration => {
          "executable" => applicationDirectory() | "venv/bin/python3"})

o1 = Python

o1 : Package

i2 : pipInstall "matplotlib"
Collecting matplotlib
  Using cached matplotlib-3.10.7-cp310-cp310-manylinux2014_x86_64.manylinux_2_17_x86_64.whl (8.7 MB)
Collecting fonttools>=4.22.0
  Using cached fonttools-4.60.1-cp310-cp310-manylinux2014_x86_64.manylinux_2_17_x86_64.whl (4.8 MB)
Collecting packaging>=20.0
  Using cached packaging-25.0-py3-none-any.whl (66 kB)
Collecting python-dateutil>=2.7
  Using cached python_dateutil-2.9.0.post0-py2.py3-none-any.whl (229 kB)
Collecting cycler>=0.10
  Using cached cycler-0.12.1-py3-none-any.whl (8.3 kB)
Collecting kiwisolver>=1.3.1
  Using cached kiwisolver-1.4.9-cp310-cp310-manylinux_2_12_x86_64.manylinux2010_x86_64.whl (1.6 MB)
Collecting pyparsing>=3
  Using cached pyparsing-3.2.5-py3-none-any.whl (113 kB)
Collecting contourpy>=1.0.1
  Using cached contourpy-1.3.2-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (325 kB)
Collecting numpy>=1.23
  Using cached numpy-2.2.6-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (16.8 MB)
Collecting pillow>=8
  Using cached pillow-12.0.0-cp310-cp310-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl (7.0 MB)
Collecting six>=1.5
  Using cached six-1.17.0-py2.py3-none-any.whl (11 kB)
Installing collected packages: six, pyparsing, pillow, packaging, numpy, kiwisolver, fonttools, cycler, python-dateutil, contourpy, matplotlib
Successfully installed contourpy-1.3.2 cycler-0.12.1 fonttools-4.60.1 kiwisolver-1.4.9 matplotlib-3.10.7 numpy-2.2.6 packaging-25.0 pillow-12.0.0 pyparsing-3.2.5 python-dateutil-2.9.0.post0 six-1.17.0

i3 : import "matplotlib"

o3 = <module 'matplotlib' from
     '/home/m2user/.Macaulay2/venv/lib/python3.10/site-packages/matplotlib/__
     init__.py'>

o3 : PythonObject of class module