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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 setHistogramRange(self, mn, mx, padding=0.1):
 """Set the Y range on the histogram plot. This disables auto-scaling."""

        self.vb.enableAutoRange(self.vb.YAxis, False)
        self.vb.setYRange(mn, mx, padding)