code: def test_copy(self):
      copy1 = self.phi1.copy()
      copy2 = self.phi3.copy()
  
      copy4 = copy1.copy()
      copy5 = copy2.copy()
  
      self.assertEqual(copy1.scope(), copy4.scope())
      self.assertEqual(copy1.pdf, copy4.pdf)
      self.assertEqual(copy2.scope(), copy5.scope())
      self.assertEqual(copy2.pdf, copy5.pdf)
  
imports: import unittest
  import numpy
  import numpy.testing
  from scipy.special import beta
  from scipy.stats import multivariate_normal
  from pgmpy.factors.continuous import ContinuousFactor
label_desc: Use image node_id 15 for calling the TestContinuousFactorMethods obj's underlying member method code with example usage: obj.test_copy() without return types