title: Menubar created by PyQt Designer
body: <p>i designed in PyQt-Designer a surface and converted it to a .py
  No I´m trying to link a function to a menubar-(button). There is something like open, save, close.... 
  I have tried a lot, but unsuccessfully, i hope you can help me to connect a simple function to the open-button in the menu bar.</p>
  
  <p>for example a function that is linked to the menubar
  menubar->open->function(open_path):</p>
  
  <pre><code>def open_path():
                  root= Tk()
                  Pfad=askdirectory()
                  root.destroy
  </code></pre>
  
  <p>Thank you for your help!</p>
  
  <p>Here is the Code: </p>
  
  <pre><code>from PyQt5 import QtCore, QtGui, QtWidgets
  import os
  from tkinter import *
  from tkinter.filedialog import askdirectory
  
  
  class Ui_MainWindow(object):
      def setupUi(self, MainWindow):
          MainWindow.setObjectName("Auswertung Brechzahlbestimmung")
          MainWindow.resize(1205, 641)
          self.centralwidget = QtWidgets.QWidget(MainWindow)
          self.centralwidget.setObjectName("centralwidget")
          self.gridLayout_5 = QtWidgets.QGridLayout(self.centralwidget)
          self.gridLayout_5.setObjectName("gridLayout_5")
          self.gridLayout_3 = QtWidgets.QGridLayout()
          self.gridLayout_3.setObjectName("gridLayout_3")
          self.verticalLayout_2 = QtWidgets.QVBoxLayout()
          self.verticalLayout_2.setObjectName("verticalLayout_2")
          self.histogram = QtWidgets.QGraphicsView(self.centralwidget)
          self.histogram.setMinimumSize(QtCore.QSize(182, 126))
          self.histogram.setMaximumSize(QtCore.QSize(16777215, 126))
          self.histogram.setObjectName("histogram")
          self.verticalLayout_2.addWidget(self.histogram)
          self.gridLayout_3.addLayout(self.verticalLayout_2, 2, 2, 1, 1)
          self.label = QtWidgets.QLabel(self.centralwidget)
          self.label.setObjectName("label")
          self.gridLayout_3.addWidget(self.label, 0, 2, 1, 1)
          self.horizontalSlider = QtWidgets.QSlider(self.centralwidget)
          self.horizontalSlider.setOrientation(QtCore.Qt.Horizontal)
          self.horizontalSlider.setObjectName("horizontalSlider")
          self.gridLayout_3.addWidget(self.horizontalSlider, 2, 0, 1, 1)
          self.label_4 = QtWidgets.QLabel(self.centralwidget)
          self.label_4.setObjectName("label_4")
          self.gridLayout_3.addWidget(self.label_4, 0, 0, 1, 1)
          self.gridLayout_4 = QtWidgets.QGridLayout()
          self.gridLayout_4.setObjectName("gridLayout_4")
          self.gridLayout_3.addLayout(self.gridLayout_4, 1, 4, 1, 1)
          self.seitenansicht = QtWidgets.QGraphicsView(self.centralwidget)
          self.seitenansicht.setMinimumSize(QtCore.QSize(537, 407))
          self.seitenansicht.setObjectName("seitenansicht")
          self.gridLayout_3.addWidget(self.seitenansicht, 1, 2, 1, 1)
          self.verticalSlider = QtWidgets.QSlider(self.centralwidget)
          self.verticalSlider.setOrientation(QtCore.Qt.Vertical)
          self.verticalSlider.setObjectName("verticalSlider")
          self.gridLayout_3.addWidget(self.verticalSlider, 1, 1, 1, 1)
          self.draufsicht = QtWidgets.QGraphicsView(self.centralwidget)
          self.draufsicht.setMinimumSize(QtCore.QSize(537, 407))
          self.draufsicht.setObjectName("draufsicht")
          self.gridLayout_3.addWidget(self.draufsicht, 1, 0, 1, 1)
          self.referenz = QtWidgets.QGraphicsView(self.centralwidget)
          self.referenz.setMinimumSize(QtCore.QSize(70, 0))
          self.referenz.setMaximumSize(QtCore.QSize(70, 16777215))
          self.referenz.setObjectName("referenz")
          self.gridLayout_3.addWidget(self.referenz, 1, 3, 1, 1)
          self.label_2 = QtWidgets.QLabel(self.centralwidget)
          self.label_2.setObjectName("label_2")
          self.gridLayout_3.addWidget(self.label_2, 0, 3, 1, 1)
          self.gridLayout_5.addLayout(self.gridLayout_3, 0, 0, 1, 1)
          MainWindow.setCentralWidget(self.centralwidget)
  
  #Here begins the Menubar
  
          self.menubar =  QtWidgets.QMenuBar(MainWindow)
          self.menubar.setGeometry(QtCore.QRect(0, 0, 1205, 20))
          self.menubar.setObjectName("menubar")
          self.menuDatei = QtWidgets.QMenu(self.menubar)
          self.menuDatei.setObjectName("menuDatei")
          MainWindow.setMenuBar(self.menubar)
  
  
          self.statusbar = QtWidgets.QStatusBar(MainWindow)
          self.statusbar.setObjectName("statusbar")
          MainWindow.setStatusBar(self.statusbar)
          self.toolBar = QtWidgets.QToolBar(MainWindow)
          self.toolBar.setObjectName("toolBar")
          MainWindow.addToolBar(QtCore.Qt.TopToolBarArea, self.toolBar)
  
          self.actionOpen = QtWidgets.QAction(MainWindow)
          self.actionOpen.setObjectName("actionOpen")
  
          self.actionSave = QtWidgets.QAction(MainWindow)
          self.actionSave.setObjectName("actionSave")
          self.actionExport_Picture = QtWidgets.QAction(MainWindow)
          self.actionExport_Picture.setObjectName("actionExport_Picture")
          self.actionExit = QtWidgets.QAction(MainWindow)
          self.actionExit.setObjectName("actionExit") 
  
          self.menuDatei.addAction(self.actionSave)
  
          self.menuDatei.addAction(self.actionOpen)
  
          self.menuDatei.addSeparator()
          self.menuDatei.addAction(self.actionExport_Picture)
          self.menuDatei.addSeparator()   
          self.menuDatei.addAction(self.actionExit)
          self.menubar.addAction(self.menuDatei.menuAction())
  
          self.retranslateUi(MainWindow)
          QtCore.QMetaObject.connectSlotsByName(MainWindow)
  
  
  
      def retranslateUi(self, MainWindow):
          _translate = QtCore.QCoreApplication.translate
          MainWindow.setWindowTitle(_translate("MainWindow", "Auswertung Brechzahlbestimmung"))
          self.label.setText(_translate("MainWindow", "Schnitt"))
          self.label_4.setText(_translate("MainWindow", "Draufsicht"))
          self.label_2.setText(_translate("MainWindow", "n"))
          self.menuDatei.setTitle(_translate("MainWindow", "Datei"))
          self.toolBar.setWindowTitle(_translate("MainWindow", "toolBar"))
          self.actionOpen.setText(_translate("MainWindow", "Open"))
          self.actionSave.setText(_translate("MainWindow", "Save"))
          self.actionExport_Picture.setText(_translate("MainWindow", "Export Picture"))
          self.actionExit.setText(_translate("MainWindow", "Exit"))
  
  
  
  if __name__ == "__main__":
      import sys
      app = QtWidgets.QApplication(sys.argv)
      MainWindow = QtWidgets.QMainWindow()
      ui = Ui_MainWindow()
      ui.setupUi(MainWindow)
      MainWindow.show()
      sys.exit(app.exec_())
  </code></pre>