I am creating a very simple GUI with one Entry widget and
one Button.  The purpose of the Button widget is to Browse for
a file using tkFileDialog.askopenfilename().

I bind the button to a handler which spawns a tkFileDialog. This
works but the button __stays depressed__ after the handler returns!
Any ideas why?

class MyApp:
        def __init__(self, parent):
                self.myParent = parent
                self.myContainer1 = Frame(parent)
                self.myContainer1.pack()

                self.entry = Entry(self.myContainer1)
                self.entry.grid(row=0,column=0 columnspan=2)

                self.button1 = Button(self.myContainer1)
                self.button1.configure(text="...")
                self.button1.grid(row=0, column=2)
                self.button1.bind("<Button-1>", self.button1Click)
                self.button1.bind("<Return>", self.button1Click)


        def button1Click(self, event):
                filePick = tkFileDialog.askopenfilename()

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