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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 get_field_label(self, field_name, field=None):
 """ Return a label to display for a field """

        label = None
        if field is not None:
            label = getattr(field, 'verbose_name', None)
            if label is None:
                label = getattr(field, 'name', None)
        if label is None:
            label = field_name
        return label.capitalize()