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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_title (self):
 """Return title of page the URL refers to. This is per default the filename or the URL."""

        if self.title is None:
            url = u""
            if self.base_url:
                url = self.base_url
            elif self.url:
                url = self.url
            self.title = url
            if "/" in url:
                title = url.rsplit("/", 1)[1]
                if title:
                    self.title = title
        return self.title