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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 quote(self, text=None):
 """Quote this post. Parameters text : str Text to quote. Defaults to the whole text of the post. Returns ------- str A NationStates bbCode quote of the post. """

        text = text or re.sub(r'\[quote=.+?\[/quote\]', '',
                              self.text, flags=re.DOTALL
                              ).strip('\n')
        return f'[quote={self.author.id};{self.id}]{text}[/quote]'