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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 ffl_path(self, site, frametype):
 """Returns the path of the FFL file for the given site and frametype Examples -------- /virgoData/ffl/V1Online.ffl """

        try:
            return self.paths[(site, frametype)]
        except KeyError:
            self._find_paths()
            return self.paths[(site, frametype)]