TypeError: 'QAction' object is not callable

[cvanclee]

I'm trying to call a function when the user clicks on my help bar item. The error I get is TypeError: 'QAction' object is not callable
How do I fix this? I'm loading stuff from my ui file. Here is an example:

class MainWindow(QtGui.QMainWindow):
    def __init__(self):
        super(MainWindow, self).__init__()
        uic.loadUi('untitled.ui', self)
        self.show()
        self.actionD.triggered.connect(lambda: self.help())
    def help(self):
        print('help')
if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    windowObj = MainWindow()
    sys.exit(app.exec_())


<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>800</width>
    <height>600</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget"/>
  <widget class="QMenuBar" name="menubar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>800</width>
     <height>25</height>
    </rect>
   </property>
   <widget class="QMenu" name="menuHelp">
    <property name="title">
     <string>Help</string>
    </property>
    <addaction name="action"/>
   </widget>
   <addaction name="menuHelp"/>
  </widget>
  <widget class="QStatusBar" name="statusbar"/>
  <action name="action">
   <property name="text">
    <string>Click me</string>
   </property>
  </action>
 </widget>
 <resources/>
 <connections/>
</ui>