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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 end(self):
 """Write all JSON data to files."""

        for comic in self.data:
            with codecs.open(self.jsonFn(comic), 'w', self.encoding) as f:
                json.dump(self.data[comic], f, indent=2, separators=(',', ': '), sort_keys=True)