来自用户的平均输入

Question

第四个作业涉及编写一个 Python 程序来计算一组五名学生的平均测验成绩。 你的程序应该包括一个包含五个名字的列表。 使用 for 循环，它应该连续提示用户输入五个学生中每个学生的测验成绩。 每个提示都应包括要输入测验成绩的学生的姓名。 它应该计算并显示这五个等级和最高等级的平均值。 你应该决定这五个学生的名字。

所以这是我的任务，下面是我到目前为止的任务。

# This program will compute the average quiz grade for 5 students
print ("Hello, this program is designed to compute the average quiz grades for the following students: Clark, Nicole, Kiran, Alex, and Erik")

students = ["Clark", "Nicole", "Kiran", "Alex", "Erik"]
for student in students:
    print (student, ", What was your quiz grade?")
    grades = eval(input("My grade is: "))

该计划会询问每个学生的成绩。 但是，我需要取这些数字并以某种方式将它们相加，这样我就可以在之后将它们除以求平均值。 任何人都可以建议我解决这个问题的正确途径吗？

Answer 1

是的。 首先，我已经为您修复并格式化了您的代码。

# This program will compute the average quiz grade for 5 students
print("Hello, this program is designed to compute the average quiz grades for the following students: Clark, Nicole, Kiran, Alex, and Erik")

students = ["Clark", "Nicole", "Kiran", "Alex", "Erik"]

for student in students:
    print(student, ", What was your quiz grade?")
    grades = input("My grade is: ")

到目前为止，您可以向每个学生询问成绩。 一旦他们告诉您，您应该将其存储在内存中。 一个简单的方法是使用列表（我假设你还没有学习字典）。

您可以在询问成绩之前创建一个新列表，然后将用户输入的每个新成绩添加到列表末尾。

# This program will compute the average quiz grade for 5 students
print("Hello, this program is designed to compute the average quiz grades for the following students: Clark, Nicole, Kiran, Alex, and Erik")

students = ["Clark", "Nicole", "Kiran", "Alex", "Erik"]

grades = []  # create an empty list to store the grades in

for student in students:
    print(student, ", What was your quiz grade?")
    grade = input("My grade is: ")
    grades.append(int(grade))  # convert the grade to an integer number, then add it to the list

print("Here are the grades you entered: ", grades)

现在，我们需要计算列表的平均值。 回顾初等数学，一组数字的平均值是这些数字的总和除以数字的数量。

在 Python 中，您可以使用内置函数sum()来计算数字的总和。 您可以使用内置函数len()来获取列表中的元素数量。

现在，您只需将总和除以长度即可。

average = sum(grades) / len(grades)
print("The average is:", average)

现在，为了获得最高等级，您可以使用内置函数max() 。 这将找到并返回数组中最大的数字。

你可以像这样使用它。

highest = max(grades)
print("The highest grade is:", highest)

如果您想要组合代码：

# This program will compute the average quiz grade for 5 students
print("Hello, this program is designed to compute the average quiz grades for the following students: Clark, Nicole, Kiran, Alex, and Erik")

students = ["Clark", "Nicole", "Kiran", "Alex", "Erik"]

grades = []  # create an empty list to store the grades in

for student in students:
    print(student, ", What was your quiz grade?")
    grade = input("My grade is: ")
    grades.append(int(grade))  # convert the grade to an integer number, then add it to the list

print("Here are the grades you entered: ", grades)

average = sum(grades) / len(grades)
print("The average is:", average)

highest = max(grades)
print("The highest grade is:", highest)

Answer 2

有没有办法在不存储它们的情况下运行此代码并计算结果？