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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 normalize(self, parts):
 """ Invoke the RFC 2388 spec compliant normalizer :param parts: the already vetted & parsed FieldStorage objects :return: normalized dict """


        part = parts.list[0]

        return {
            'content': part.file.read(),
            'content-type': part.type,
            'file-ext': extensions.get(part.type),
            'file-name': part.filename,
        }