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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _on_click(self, event):
 """Move cross on click."""

        x = event.x
        y = event.y
        self.coords('cross_h', 0, y, self.winfo_width(), y)
        self.coords('cross_v', x, 0, x, self.winfo_height())
        self.event_generate("<<ColorChanged>>")