Python：IndexError

Question

我正在尝试用Python编写基本的冒泡排序算法，这里是代码：

novac = int(input("Enter number of vaccines : "))
strength = []
midicl = []
if novac in range(0,10):
    for x in range(0, novac-1):
        strength[x].append(int(input("Enter strength of vaccine {} :".format(x))))
        midicl[x].append(int(input(("Enter midichlorian count of patient {} :".format(x)))))
    for x in strength:
        for y in strength:
            if strength[x] < strength[y]:
                strength[x], strength[y] = strength[y], strength[x]
    print(strength)

else:
    print("A maximum of 10 vaccines are allowed")

我收到以下错误，这意味着即使在使用 list.append 方法之后我的列表索引也不在界限内。

Traceback (most recent call last):
  File "C:/Users/Aakash/PycharmProjects/Midichlorian/Midichlo.py", line 6, in <module>
    strength[x].append(int(input("Enter strength of vaccine {} :".format(x))))
IndexError: list index out of range

Answer 1

您需要更新以下内容

strength[x].append(int(input("Enter strength of vaccine {} :".format(x))))
midicl[x].append(int(input(("Enter midichlorian count of patient {} :".format(x)))))

到

strength.append(int(input("Enter strength of vaccine {} :".format(x))))
midicl.append(int(input(("Enter midichlorian count of patient {} :".format(x)))))

您无需索引以将元素追加到列表中。