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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 set_label(self, label):
 """Set label of Dataset. Parameters label : list, numpy 1-D array, pandas Series / one-column DataFrame or None The label information to be set into Dataset. Returns ------- self : Dataset Dataset with set label. """

        self.label = label
        if self.handle is not None:
            label = list_to_1d_numpy(_label_from_pandas(label), name='label')
            self.set_field('label', label)
        return self