Python-冒泡排序

def bubble_sort(li):
    for i in range(len(li) - 1):  # 第i趟
        exchange = False
        for j in range(len(li) - i - 1):
            if li[j] > li[j+1]:
                li[j], li[j+1] = li[j+1], li[j]
                exchange = True
            print(li)
        if not exchange:
            return

li = [0, 2, 3, 9, 4, 1, 8, 6, 7, 5]
print(li)
bubble_sort(li)