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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 encode(self, o):
 """ Return a JSON string representation of a Python data structure. '{"foo":["bar", "baz"]}' """

        # This doesn't pass the iterator directly to ''.join() because it
        # sucks at reporting exceptions.  It's going to do this internally
        # anyway because it uses PySequence_Fast or similar.
        chunks = list(self.iterencode(o))
        return ''.join(chunks)