old_contents: #!/usr/bin/env python3
  """Contains all the user-defined Exceptions created for PgmPy"""
  
  
  class MissingParentsError(Exception):
      def __init__(self, *missing):
          self.missing = missing
  
      def __str__(self):
          return repr("Parents are missing: " + str(self.missing))
  
  
  class ExtraParentsError(Exception):
      def __init__(self, *extra):
          self.extra = extra
  
      def __str__(self):
          return repr("Following are not parents: " + str(self.extra))
  
  
  class MissingStatesError(Exception):
      def __init__(self, *missing):
          self.missing = missing
  
      def __str__(self):
          return repr("States are missing: " + str(self.missing))
  
  
  class ExtraStatesError(Exception):
      def __init__(self, *extra):
          self.extra = extra
  
      def __str__(self):
          return repr("Following are not states: " + str(self.extra))
  
  
  class SelfLoopError(Exception):
      def __init__(self, *extra):
          self.extra = extra
  
      def __str__(self):
          return repr(str(self.extra))
  
new_contents: #!/usr/bin/env python3
  """Contains all the user-defined Exceptions created for PgmPy"""
  
  
  class MissingParentsError(Exception):
      def __init__(self, *missing):
          self.missing = missing
  
      def __str__(self):
          return repr("Parents are missing: " + str(self.missing))
  
  
  class ExtraParentsError(Exception):
      def __init__(self, *extra):
          self.extra = extra
  
      def __str__(self):
          return repr("Following are not parents: " + str(self.extra))
  
  
  class MissingStatesError(Exception):
      def __init__(self, *missing):
          self.missing = missing
  
      def __str__(self):
          return repr("States are missing: " + str(self.missing))
  
  
  class ExtraStatesError(Exception):
      def __init__(self, *extra):
          self.extra = extra
  
      def __str__(self):
          return repr("Following are not states: " + str(self.extra))
  
  
  class SelfLoopError(Exception):
      def __init__(self, *extra):
          self.extra = extra
  
      def __str__(self):
          return repr(str(self.extra))
  
  
  class CycleError(Exception):
      def __init__(self, *extra):
          self.extra = extra
  
      def __str__(self):
          return repr(str(self.extra))
  
subject: Add CycleError