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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 hash(self):
 """ Return a value that's used to uniquely identify an entry in a date so we can regroup all entries that share the same hash. """

        return u''.join([
            self.alias,
            self.description,
            str(self.ignored),
            str(self.flags),
        ])