Python:打印重复错误，重复输入

Question

我做了一个程序，可以提高平均成绩。一切看起来都很好，唯一的问题是，当我在最后运行程序时，它打印出来如下所示：

Jack
5
10
6
7.0
Stacy
10
8
9
9.0
Jack
5
10
6
7.0
Stacy
10
8
9
9.0
Jack
5
10
6
7.0
Stacy
10
8
9
9.0

如何让程序打印出来，例如：

Name Grade1 Grade2 Grade3 (etc) Average
Name2 Grade1 Grade2 Grade3 (etc) Average2

etc

每个学生的名字是分开的吗？

grades = []       
names = []         
ch = 1               
while (ch!=0):                         
    name = input('Enter a name: ')         
    if (name.isalpha()):           
        grade = int(input('Enter a grade: '))
        if(grade <= 10 and grade > 0):     
            names.append(name)         
            grades.append(grade)       
        else:
            while (grade <= 0) or (grade > 10):
                print ('The grade you entered is not correct, try again!')
                grade = int (input('Enter a grade: '))
            names.append(name)
            grades.append(grade)
    elif(name == '0'):
        print ('A zero was entered, end of program.')
        ch = 0   
    else:
        print ('The name was entered wrong, try again!')
#problem probably starts from here
howmuch = len(grades)                   
result = []                               
for k in range(0, howmuch):
    nreal = names[k]                             
    for i in range(0, howmuch):           
        if (nreal == names[i]):         
            result.append(grades[i])
    greal = len(result)
    sumup = 0
    print (nreal)
    howmuch = len(names)
    for z in range(0,greal):
        a = result[z]
        b= int(a)
        print (b)
        sumup = sumup + b
    avg = sumup /(z+1)
    print (avg)
    result = []

Answer 1

在不需要换行的print语句末尾添加一个逗号。

print nreal,
...
    print b,
    ...
print avg

Answer 2

默认情况下，python会在每个print调用的末尾添加一个\n。要修复此问题，请添加第二个要打印的参数。print(string, end="")

Answer 3

在Python3中，您可以通过设置打印函数的结束参数来打印"horizontally“，默认情况下是"\n”(换行符)，如下所示：

...
print (nreal, end = " ")
...
   print (b, end = " ")

将最后一个打印语句保留为：print (avg)，因为您希望它打印一个换行符，用于打印下一个学生的信息。