(PyQt) Uncheck pushbutton from outside button's class?

Question

A QPushButton is set 'asCheckable'. Whence toggled, a class bool is changed.
This altered bool allows a method in a different class to proceed, and upon completion of this outside method I need to return the button to its initial state, 'setChecked(False)'.

While I am able to return the class housed bool to its default state at the end of this external method, I am unable to externally access a method which un-clicks the button.

I assume its due to the arguments in the classes init, but these are necessary - and I'm wondering if there is another means to achieve the described workflow.

Related code snips below:

(command in question is distinguished at bottom of 'Class 2')

Class 1:

class shapeCSVeditor(QtGui.QDialog, QtGui.QWidget):
   valueShare = []
   rowOverride = False#  <<=== equivalent to 'override' in 'Class 2'
   def __init__(self, iface, fileName, editorType, parent=None):
       super(shapeCSVeditor, self).__init__(parent)
       self.iface = iface
       self.editorType = editorType
       self.fileName = filename
       self.pushButtonSetBase = QtGui.QPushButton(self)
       self.pushButtonSetBase.setText("Set Base Shape")
       self.pushButtonSetBase.setCheckable(True)
       self.pushButtonSetBase.toggled.connect(self.on_pushButtonSetBase_toggled)
       self.layoutHorizontal.addWidget(self.pushButtonSetBase)

   #some other things here...

   @QtCore.pyqtSlot()
   def on_pushButtonSetBase_toggled(self):
       shapeCSVeditor.rowOverride = True
       pass

   def on_BaseRow_Changed(self):
       self.pushButtonSetBase.setChecked(False)
       return 

Class 2:

class CSVModel(QtCore.QAbstractTableModel):

  # Establish inital settings and branch processes
  def __init__(self, iface, fileName, editorType, parent=None):
      super(CSVModel,self).__init__()
      self.propertiesFile = r'some file'
      self.areaStressFile = r'some other file'          
      self.iface = iface
      self.rows = []
      self.editorType = editorType
      self.loadCSV()
      self.iface.mapCanvas().selectionChanged.connect(self.addRow)

  # add rows to the TableView based on object selection(s) in Qgis.mapCanvas
  def addRow(self):
      override = shapeCSVeditor.rowOverride
      selectedFeatures = selectedLayer.selectedFeatures()
      if override:
          for feature in selectedFeatures:
              self.rows.pop(0)
              feat_Attributes = []
              feat_Attributes.extend([self.iface.activeLayer().name()+'_'+str(feature.id())])
              feat_Attributes.extend(['',]*(len(self.header)-1))
              self.beginResetModel()
              self.rows.insert(0,feat_Attributes)
              shapeCSVeditor.rowOverride = False
              self.endResetModel()

              shapeCSVeditor.on_BaseRow_Changed# <<<=== wrong-diddily!

              break

PS - if parentheticals are added to the 'shapeCSVeditor()' 3 arguments are requisite as referenced in the Button class, and if parentheticals are added to 'on_BaseRow_Changed', the return is;

TypeError: unbound method on_BaseRow_Changed() must be called with shapeCSVeditor instance as first argument (got nothing instead)

Answer 1

What you are doing is strange. In python, the first argument of a class method is always the object itself. So, in your:

   def on_BaseRow_Changed(self):
       self.pushButtonSetBase.setChecked(False)
       # return => This return is useless

if you don't provide an object then you can't access the pushbutton.

You didn't gave us all the code but I think you should provide your addRow with the shapeCSVeditor object that you want to update:

def addRow(self, shapeCSVObj):
   override = shapeCSVObj.rowOverride
   if override:
      for feature in selectedFeatures:
          self.rows.pop(0)
          feat_Attributes = []
          feat_Attributes.extend([self.iface.activeLayer().name()+'_'+str(feature.id())])
          feat_Attributes.extend(['',]*(len(self.header)-1))
          self.beginResetModel()
          self.rows.insert(0,feat_Attributes)
          shapeCSVObj.rowOverride = False
          self.endResetModel()

          shapeCSVObj.on_BaseRow_Changed()

          break

Somewhere you must have a shapeCSVeditor that is created. You should provide it to you outside class.

Hope this helps.