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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_itunes_closed_captioned(self):
 """Parses isClosedCaptioned from itunes tags and sets value"""

        try:
            self.itunes_closed_captioned = self.soup.find(
                'itunes:isclosedcaptioned').string
            self.itunes_closed_captioned = self.itunes_closed_captioned.lower()
        except AttributeError:
            self.itunes_closed_captioned = None