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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 cloud_percent(self):
 """Return percentage of cloud coverage."""

        image_content_qi = self._metadata.findtext(
            (
                """n1:Quality_Indicators_Info/Image_Content_QI/"""
                """CLOUDY_PIXEL_PERCENTAGE"""
            ),
            namespaces=self._nsmap)
        return float(image_content_qi)