code: def block_account(self, hash):
          
  
          hash = self._process_value(hash, 'block')
  
          payload = {"hash": hash}
  
          resp = self.call('block_account', payload)
  
          return resp['account']
docs: Returns the account containing block
  
          :param hash: Hash of the block to return account for
          :type hash: str
  
          :raises: :py:exc:`nano.rpc.RPCException`
  
          >>> rpc.block_account(
          ...     hash="000D1BAEC8EC208142C99059B393051BAC8380F9B5A2E6B2489A277D81789F3F"
          ... )
          "xrb_3e3j5tkog48pnny9dmfzj1r16pg8t1e76dz5tmac6iq689wyjfpi00000000"