Thu Feb 3 14:02:22 2022 pendulum_double_ode_test(): Python version: 3.6.9 Test pendulum_double_ode(). parameters: g = 9.81 m1 = 1.0 m2 = 1.0 l1 = 2.0 l2 = 1.0 t0 = 0.0 y0 = [0.25 0. 0. 0. ] tstop = 50.0 Graphics saved as "pendulum_double_x1y1.png" Graphics saved as "pendulum_double_x2y2.png" Graphics saved as "pendulum_double_phase.png" Graphics saved as "pendulum_double_energy.png" pendulum_double_ode_test(): Normal end of execution. Thu Feb 3 14:02:24 2022