code: def _partial(self):
          
          raw_stdout = self._process.readAllStandardOutput()
          stdout = handle_qbytearray(raw_stdout, self._get_encoding())
  
          if self._partial_stdout is None:
              self._partial_stdout = stdout
          else:
              self._partial_stdout += stdout
  
          self.sig_partial.emit(self, stdout, None)
docs: Callback for partial output.