code: def add_output(self, address, value, unit='satoshi'):
          
          value_satoshi = self.from_unit_to_satoshi(value, unit)
  
          if self.verbose:
              print("Adding output of: %s satoshi (%.8f)" % (
                  value_satoshi, (value_satoshi / 1e8)
              ))
  
          self.outs.append({
              'address': address,
              'value': value_satoshi
          })
docs: Add an output (a person who will receive funds via this tx).
          If no unit is specified, satoshi is implied.