text: from piston.blockchain import Blockchain as PistonBlockchain
  import warnings
  warnings.simplefilter('always', DeprecationWarning)
  
  
  class Blockchain(PistonBlockchain):
      def __init__(self, *args, **kwargs):
          warnings.warn(
              "Please use the API compatible 'piston-lib' in future",
              DeprecationWarning
          )
          super(Blockchain, self).__init__(*args, **kwargs)
  