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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 clip_lower(self, threshold):
 """ Create new SArray with all values clipped to the given lower bound. This function can operate on numeric arrays, as well as vector arrays, in which case each individual element in each vector is clipped. Throws an exception if the SArray is empty or the types are non-numeric. Parameters threshold : float The lower bound used to clip values. Returns ------- out : SArray See Also -------- clip, clip_upper Examples -------- dtype: int Rows: 3 [2, 2, 3] """

        with cython_context():
            return SArray(_proxy=self.__proxy__.clip(threshold, float('nan')))