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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 post_note(self):
 """ Post note and return the URL of the posted note """

        if self.args.note_title:
            note_title = self.args.note_title
        else:
            note_title = None

        note_content = self.args.note_content
        mynote = self.pump.Note(display_name=note_title, content=note_content)
        mynote.to = self.pump.me.followers
        mynote.cc = self.pump.Public
        mynote.send()

        return mynote.id or None