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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 postprocess_subject(self, entry):
 """ Parse subject keywords. Subject keywords are usually semicolon-delimited. """


        if type(entry.subject) not in [str, unicode]:
            subject = u' '.join([unicode(k) for k in entry.subject])
        else:
            subject = entry.subject
        entry.subject = [k.strip().upper() for k in subject.split(';')]