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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 gaussian_pdf(x, g):
 """ Gaussian probability density function at ``x`` for |GVar| ``g``. """

        return (
            numpy.exp(-(x - g.mean) ** 2 / 2. /g.var) /
            numpy.sqrt(g.var * 2 * numpy.pi)
            )