def exportValue(self, vf, value):
        m = StrStrHashMap(value)
        keysAndValues = []
        for i in m.keys():
            keysAndValues.append(i)
            keysAndValues.append(m[i])
def select_all(self, event=None):
        self.tag_add(SEL, "1.0", "end-1c")
        self.mark_set(INSERT, "1.0")
        self.see(INSERT)
        return "break"