code: def __init__(self, *args, dtype="float64", **kwargs):
      unittest.TestCase.__init__(self, *args, **kwargs)
      self.dtype = dtype
      self.decimal_places = 7
      self.delta = 1e-15
      if np.dtype(self.dtype) == np.dtype("float32"):
          self.decimal_places = 3
          self.delta = 1e-6
  
imports: import numpy
  import unittest
label_desc: Use image node_id 2 to create a new TestProx object from inherited base classes: unittest with example: obj = TestProx()