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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 _set_unicode(self, value):
 """ Assign the primary unicode to the glyph. This will be an integer or None. Subclasses may override this method. """

        values = list(self.unicodes)
        if value in values:
            values.remove(value)
        values.insert(0, value)
        self.unicodes = values