Tue May  5 15:00:50 2026

president_matrix_test():
  matplotlib version: 3.5.1
  numpy version:      1.26.4
  python version:     3.10.12
  Test president_matrix().
  Graphics saved as "president_matrix.png"

president_matrix_test():
  Normal end of execution.
Tue May  5 15:00:51 2026