要求学生名称和成绩，直到输入完成？

Question

我正在尝试编写一个程序，该程序存储用户进入列表中的名称/号码，并使用功能来计算学生的最大，最小值和平均值，而无需询问有多少。但是，我不知道从哪里开始。 '''

print("-----Program for printing student name with marks using list-----")

D = {}

n = int(input('How many student record you want to store?? '))

ls = []

for i in range(0, n):


x,y = input("Enter the student name and Grade: ").split()


ls.append((y,x))


ls = sorted(ls, reverse = True)

print('Sorted list of students according to their marks in descending order')

for i in ls:


print(i[1], i[0])

Answer 1

如上所述，您需要使用一个时循环，并且需要在分裂之前将输入作为单个字符串抓住，以便检查“完成”信号。

print("-----Program for printing student name with marks using list-----")
ls = []
while True:
    s = input("Enter the student name and Grade: ")
    if s == "done":
        break
    x,y = s.split()
    ls.append((y,x))

ls.sort(reverse = True)
print('Sorted list of students according to their marks in descending order')
for i in ls:
    print(i[1], i[0])

Answer 2

如我的评论中所述，请使用一定的循环：

print("-----Program for printing student name with marks using list-----")

D = {} # Not sure what this is for

ls = []

while True:
    user_input = input("Enter the student name and Grade: (done if complete)")

    # Break and exit the loop if done
    if user_input.lower() == 'done':
        break

    # Otherwise, continue adding to list
    x,y = user_input.split()
    ls.append((y,x))

ls = sorted(ls, reverse = True)

print('Sorted list of students according to their marks in descending order')

for i in ls:
    print(i[1], i[0])

Answer 3

使用创建无限循环，而（true）：和内部 block使用如果（x ==“ done”）：break;。这将询问学生名称，直到输入“完成”为止。