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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 human(self):
 """Human-readable timestamp."""

        # get timezone offset
        delta_sec = time.timezone
        m, s = divmod(delta_sec, 60)
        h, m = divmod(m, 60)
        # create output
        format_string = "%Y-%m-%d %H:%M:%S"
        out = self.datetime.strftime(format_string)
        return out