QtCore.QObject.connect(self.Choices_list, QtCore.SIGNAL(_fromUtf8("itemSelectionChanged()")), result.decree(self.Choices_list.currentRow, self.A_number_input.value, self.B_number_input.value))
TypeError: arguments did not match any overloaded call:
  QObject.connect(QObject, SIGNAL(), QObject, SLOT(), Qt.ConnectionType=Qt.AutoConnection): argument 3 has unexpected type 'NoneType'
  QObject.connect(QObject, SIGNAL(), callable, Qt.ConnectionType=Qt.AutoConnection): argument 3 has unexpected type 'NoneType'
  QObject.connect(QObject, SIGNAL(), SLOT(), Qt.ConnectionType=Qt.AutoConnection): argument 2 has unexpected type 'str'
mint@mint ~ $