python - 如何通过在输入中输入内容来显示程序的结果？

Question

所以，我有一个程序，我正在完成它，但显然遇到了问题。在程序中，我必须在输入中输入 0 时，程序将停止并打印结果。在我继续说其他任何事情之前，这是程序:

import collections
students = collections.defaultdict(list)

while True:
    student = input("Enter a name: ").replace(" ","")
    if student == "0":
        print ("A zero has been entered(0)")
        break

    if not student.isalpha():
            print ("You've entered an invalid name. Try again.")
            continue

    while True:
        grade = input("Enter a grade: ").replace(" ","")
        if grade == "0":
            print ("A zero has been entered(0)")
            break

        if not grade.isdigit():
            print ("You've entered an invalid name. Try again.")
            continue

        grade = int(grade)
        if 1 <= grade <= 10:
            students[student].append(grade)
            break

for i, j in students.items():
    print ("NAME: ", i)
    print ("LIST OF GRADES: ", j)
    print ("AVERAGE: ", round(sum(j)/len(j),1))

我想出了一种方法如何在 "Enter a name: " 部分输入 0 后让程序停止并发布结果。这是打印出来的:

Enter a name: Stacy
Enter a grade: 8
Enter a name: 0
A zero has been entered(0)
NAME:  Stacy
LIST OF GRADES:  [8]
AVERAGE:  8.0

我需要对 "Enter a grade: " 部分做同样的事情，但是如果我试着让程序像现在这样，这就是它打印出来的内容:

Enter a name: Stacy
Enter a grade: 0
A zero has been entered(0)
Enter a name: 

如何让程序像在名称输入中输入 0 时那样显示结果？

Answer 1

在您的输入之一中，检查输入是否为 0。如果是，则调用 sys.exit。这可以在任何地方完成，甚至在检查成绩时也是如此。只需确保包含这两个选项(字符串 0 和 int 0)。此外，为什么它仍然说 A zero has been entered(0) 的原因是因为你只是退出一个循环，然后基本上从头继续。

# Be sure to import sys!

random_place = input("Whatever is here ")
if random_place == '0' or random_pace == 0:
    sys.exit(0)

然后您的程序将退出。