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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 get_datetimenow(self):
 """ get datetime now according to USE_TZ and default time """

        value = timezone.datetime.utcnow()
        if settings.USE_TZ:
            value = timezone.localtime(
                timezone.make_aware(value, timezone.utc),
                timezone.get_default_timezone()
            )
        return value