How to Implement the Strategy Pattern in Python

class SortingStrategy:
    def sort(self, data):
        raise NotImplementedError

class BubbleSort(SortingStrategy):
    def sort(self, data):
        result = data.copy()
        n = len(result)
        for i in range(n):
            for j in range(0, n - i - 1):
                if result[j] > result[j + 1]:
                    result[j], result[j + 1] = result[j + 1], result[j]
        return result

class QuickSort(SortingStrategy):
    def sort(self, data):
        if len(data) <= 1:
            return data.copy()
        pivot = data[0]
        less = [x for x in data[1:] if x <= pivot]
        greater = [x for x in data[1:] if x > pivot]
        return self.sort(less) + [pivot] + self.sort(greater)

class Sorter:
    def __init__(self, strategy):
        self._strategy = strategy

    def set_strategy(self, strategy):
        self._strategy = strategy

    def execute(self, data):
        return self._strategy.sort(data)

if __name__ == "__main__":
    numbers = [3, 1, 4, 1, 5, 9, 2, 6]
    sorter = Sorter(BubbleSort())
    print("Bubble:", sorter.execute(numbers))
    sorter.set_strategy(QuickSort())
    print("Quick:", sorter.execute(numbers))