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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 _shrink(v, gamma):
 """Soft-shrinkage of an array with parameter gamma. Parameters v : array Array containing the values to be applied to the shrinkage operator gamma : float Shrinkage parameter. Returns ------- v : array The same input array after the shrinkage operator was applied. """

        pos = v > gamma
        neg = v < -gamma
        v[pos] -= gamma
        v[neg] += gamma
        v[np.logical_and(~pos, ~neg)] = .0
        return v