old_contents: #!/usr/bin/env python
  """
  :Author Patrik Valkovic
  :Created 23.06.2017 16:39
  :Licence GNUv3
  Part of grammpy
  
  """
  
  
  class Terminal:
      '''
      Represent Terminal in former grammar
      '''
  
      def __init__(self, symbol, grammar):
          '''
          Create new terminal, where symbol is provided terminal passed into grammar
          :param symbol: Symbol representing terminal
          :param grammar: The grammar to which the terminal belongs
          '''
          self.__symbol = symbol
          self.__grammar = grammar
  
      def __hash__(self):
          '''
          Return hash based on symbol and instance of grammar
          :return: Hash value
          '''
          return hash((self.__symbol, id(self.__grammar)))
  
      def __eq__(self, other):
          '''
          Compare two terminals based on hash values
          :param other: Terminal to compare
          :type other: Terminal
          :return:
          :rtype bool
          '''
          return isinstance(other, Terminal) and hash(self) == hash(other)
  
      def symbol(self):
          '''
          Get symbol for the terminal.
          :return: Symbol that represent current terminal
          '''
          return self.__symbol
  
new_contents: #!/usr/bin/env python
  """
  :Author Patrik Valkovic
  :Created 23.06.2017 16:39
  :Licence GNUv3
  Part of grammpy
  
  """
  
  
  class Terminal:
      '''
      Represent Terminal in former grammar
      '''
  
      def __init__(self, symbol, grammar):
          '''
          Create new terminal, where symbol is provided terminal passed into grammar
          :param symbol: Symbol representing terminal
          :param grammar: The grammar to which the terminal belongs
          '''
          self.__symbol = symbol
          self.__grammar = grammar
  
      def __hash__(self):
          '''
          Return hash based on symbol and instance of grammar
          :return: Hash value
          '''
          return hash((self.__symbol, id(self.__grammar)))
  
      def __eq__(self, other):
          '''
          Compare two terminals based on hash values
          :param other: Terminal to compare
          :type other: Terminal
          :return:
          :rtype bool
          '''
          return isinstance(other, Terminal) and hash(self) == hash(other)
  
      def symbol(self):
          '''
          Get symbol for the terminal.
          :return: Symbol that represent current terminal
          '''
          return self.__symbol
  
      @property
      def s(self):
          """
          Shortcut for symbol method
          :return: Symbol that represent current terminal
          """
          return self.symbol()
  
subject: Add s property into Terminal - property is shortcut for symbol method