code: def __getattr__(self, attr):
      return getattr(self.magnitude, attr)
  
imports: from datetime import datetime, timezone, timedelta
  import platform
  from unittest.mock import MagicMock
  import matplotlib.pyplot
  from matplotlib.testing.decorators import check_figures_equal, image_comparison
  import matplotlib.units
  from matplotlib.category import UnitData
  import numpy
  import pytest
label_desc: Use image node_id 4 for calling the Quantity obj's underlying member method code with example usage: obj.__getattr__(attr) and returns: getattr