如果輸入數字0，如何結束while循環並遵循其他說明

Question

我的代碼將所有用戶輸入的項目都放入一個列表中，我希望它在輸入0時停止，並遵循其他命令，例如對列表進行排序，刪除最高和最低值，然后查找它們的平均值。這就是代碼，遠：

i = 0
sizes = []
while i == 0:
    size = int(input("Enter the weight of your parcel in grams, enter 0 when done: "))
    sizes.append(size)
    if size < 1:
        break
sortedsizes = sorted(sizes)
largest = max(sizes)
smallest = min(sizes)
sizes.remove(largest)
sizes.remove(smallest)
print(sizes)

Answer 1

你不需要i ，你不想要的軟件包，體重少0。你可能要考慮使用float ，而不是int -我住的地方，我們衡量kg的包裹或g信件-無論將采取包括部分（1.235千克或5.28克）。

如果有人輸入"22kg"任何數字轉換都會崩潰-您應注意以下"22kg" ：

sizes = []
while True:
    try:
        size = int(input("Enter the weight of your parcel in grams, enter 0 when done: "))
        if size > 0:  
            sizes.append(size)
        elif size == 0:
            break
        else:
            raise ValueError()  # negative weight
    except ValueError:
        print("Only positive numbers or 0 to quit. Do not input text or kg/g/mg.")

sortedsizes = sorted(sizes) # you do nothing with this - why sort at all?
largest = max(sizes)
smallest = min(sizes)
sizes.remove(largest)
sizes.remove(smallest)
print(sizes)  # this prints the unsorted list that got min/max removed...

輸出：

Enter the weight of your parcel in grams, enter 0 when done: 4 
Enter the weight of your parcel in grams, enter 0 when done: 3 
Enter the weight of your parcel in grams, enter 0 when done: 5 
Enter the weight of your parcel in grams, enter 0 when done: 6 
Enter the weight of your parcel in grams, enter 0 when done: -1 
Only positive numbers or 0 to quit. Do not input text or kg/g/mg.
Enter the weight of your parcel in grams, enter 0 when done: DONE 
Only positive numbers or 0 to quit. Do not input text or kg/g/mg. 
Enter the weight of your parcel in grams, enter 0 when done: 2 
Enter the weight of your parcel in grams, enter 0 when done: 0

[4, 3, 5]  # this is the unsorted list that got min/max removed...

---

如果您只想從排序列表中刪除1個最大值和1個最小值，則可以簡單地將其刪除：

sortedsizes = sorted(sizes)  
maxval = sortedsizes.pop()    # remove last one from sortedsizes  (== max)
minval = sortedsizes.pop(0)   # remove first one from sortedsizes (== min)
print(sortedsizes)            # print the sorted values

Doku：

• pop（）doku
• 嘗試：捕獲：錯誤處理

Answer 2

如果要在輸入0時停止代碼（將大小附加到列表中並在重復過程之后繼續執行命令），則必須執行相反的操作。

while True:
    size = int(input("Enter the weight of your parcel in grams, enter 0 when done: "))
    sizes.append(size)
    if size < 1:
        break

當語句為false時，代碼從sortedsizes = sorted(sizes)命令繼續。