def chooseVHDFiles(self):
    files = filedialog.askopenfilenames(
        initialdir=os.getcwd() + '\\testbenches\\',
        title="Choose VHD files",
        filetypes=(("VHD Files", "*.vhd"),)
    )
    labelText = ""
    self.selectedTestbenches = []
    try:
        for tf in files:
            if tf == "":
                self.tbUploadVar.set("")
                return
            tf = open(tf)  # or tf = open(tf, 'r')
            self.selectedTestbenches.append(tf.name)
            labelText += tf.name[tf.name.rfind("/") + 1:len(tf.name)] + '\n'
            tf.close()
    except:
        self.tbSelectLabel['text'] = 'An Error Occured'
        return

    self.tbSelectLabel['text'] = labelText