code: def __init__(self):
      super().__init__()
      self.initial_pos = nn.Parameter(torch.tensor([10.0]))
      self.initial_vel = nn.Parameter(torch.tensor([0.0]))
      self.dynamics_fn = HamiltonianDynamics()
      self.event_fn = EventFn()
      self.inst_update = InstantaneousStateChange()
  
imports: import argparse
  import os
  import math
  import matplotlib.pyplot
  import torch
  import torch.nn
  from torchdiffeq import odeint, odeint_event
  from bouncing_ball import BouncingBallExample
label_desc: Use image node_id 1 to create a new NeuralPhysics object from inherited base classes: nn with example: obj = NeuralPhysics()