code: def test_scope(self):
      self.assertEqual(self.phi1.scope(), self.phi1.scope())
      self.assertEqual(self.phi2.scope(), self.phi2.scope())
      self.assertEqual(self.phi3.scope(), self.phi3.scope())
  
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 6 for calling the TestContinuousFactorMethods obj's underlying member method code with example usage: obj.test_scope() without return types