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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 min(self):
 """Return the minimum value in this histogram. If there are no values in the histogram at all, return 10. Returns: int: The minimum value in the histogram. """

        if len(self._data) == 0:
            return 10
        return next(iter(sorted(self._data.keys())))