Question

我一直试图破解这个坚果一段时间。我正在试图找出如何让我的平均值返回浮点数以满足Code Academy的要求。我相信我满足了我的def平均功能的浮动要求。我收到他们的错误消息...... “哎呀，再试一次！确保平均值返回一个浮点数！”

这些是CodeAcademy要求：编写一个名为get_average的函数，它将学生字典作为输入并返回他/她的加权平均值。使用您的平均功能来提供帮助。作业为10％，测验为30％，测试为60％。

我想问题是......我还能在哪里贴上漂浮物？

lloyd = {
"name": "Lloyd",
"homework": [90.0, 97.0, 75.0, 92.0],
"quizzes": [88.0, 40.0, 94.0],
"tests": [75.0, 90.0]
}
alice = {
    "name": "Alice",
    "homework": [100.0, 92.0, 98.0, 100.0],
    "quizzes": [82.0, 83.0, 91.0],
    "tests": [89.0, 97.0]
}
tyler = {
    "name": "Tyler",
    "homework": [0.0, 87.0, 75.0, 22.0],
    "quizzes": [0.0, 75.0, 78.0],
    "tests": [100.0, 100.0]
}
def average(list):
   return float(sum(list)/(len(list)))

def get_average(student):
    h=average(student["homework"])
    q= average(student["quizzes"])
    t= average(student["tests"])
    rez = h*0.1+q*0.3+t*0.6
    return rez

def get_class_average(studenti):
    for x in studenti:
    print x
    print get_average(x)

studenti=[alice,tyler,lloyd]
get_class_average(studenti)

Answer 1

问题是您的脚本在运行时返回语法错误。

更改：

def get_class_average(studenti):
for x in studenti:
print x
print get_average(x)

到

def get_class_average(studenti):
    for x in studenti:
        print x    #note the tab
        print get_average(x) #note the tab spaces

由于此语法错误，您的脚本无法完全运行，因此CodeAcademy无法验证脚本的结果。

我在更正语法错误后尝试了您的代码段，并且能够获得以下输出：

{'quizzes': [82.0, 83.0, 91.0], 'tests': [89.0, 97.0], 'name': 'Alice', 'homework': [100.0, 92.0, 98.0, 100.0]}
91.15
{'quizzes': [0.0, 75.0, 78.0], 'tests': [100.0, 100.0], 'name': 'Tyler', 'homework': [0.0, 87.0, 75.0, 22.0]}
79.9
{'quizzes': [88.0, 40.0, 94.0], 'tests': [75.0, 90.0], 'name': 'Lloyd', 'homework': [90.0, 97.0, 75.0, 92.0]}
80.55

Answer 2

lloyd = { ＆＃34;姓名＆＃34;：＆＃34; Lloyd＆＃34;，＆＃34;作业＆＃34;：[90.0,97.0,75.0,92.0]，＆＃34;测验＆＃34;：[88.0,40.0,94.0]，＆＃34;测试＆＃34;：[75.0,90.0] } alice = { ＆＃34;姓名＆＃34;：＆＃34; Alice＆＃34;，＆＃34;作业＆＃34;：[100.0,92.0,98.0,100.0]，＆＃34;测验＆＃34;：[82.0,83.0,91.0]，＆＃34;测试＆＃34;：[89.0,97.0] } tyler = { ＆＃34;姓名＆＃34;：＆＃34; Tyler＆＃34;，＆＃34;作业＆＃34;：[0.0,87.0,75.0,22.0]，＆＃34;测验＆＃34;：[0.0,75.0,78.0]，＆＃34;测试＆＃34;：[100.0,100.0]

}

def平均值（数字）：总数=总和（数字）浮动（总） print total / len（数字）

def average（list）： ave = float（sum（list））/ len（list）回归大道 def get_average（学生）：体重=平均水平（学生[＆＃34;家庭作业＆＃34;]）* 0.1 +平均水平（学生[＆＃34;小测验＆＃34;]）* 0.3 +平均水平（学生[＆＃34;测试＆＃34;]） * 0.6 回报重量

Answer 3

它对我有用

loyd = {
    "name": "Lloyd",
    "homework": [90.0, 97.0, 75.0, 92.0],
    "quizzes": [88.0, 40.0, 94.0],
    "tests": [75.0, 90.0]
}
alice = {
    "name": "Alice",
    "homework": [100.0, 92.0, 98.0, 100.0],
    "quizzes": [82.0, 83.0, 91.0],
    "tests": [89.0, 97.0]
}
tyler = {
    "name": "Tyler",
    "homework": [0.0, 87.0, 75.0, 22.0],
    "quizzes": [0.0, 75.0, 78.0],
    "tests": [100.0, 100.0]
}
item = ["homework", "quizzes", "tests"]
students =["lloyd", "alice", "tyler"]

# Add your function below!
def average(numbers):
    total = float(sum(numbers))
    total = total / len(numbers)
    return total

def get_average(student):
    homework = float(0.1 * average(student["homework"]))
    quizzes = float(0.3 * average(student["quizzes"]))
    tests = float(0.6 * average(student["tests"]))
    avg = homework + quizzes + tests 
    return avg

Answer 4

我已经完成了Codecedemy，这是我的代码。

lloyd = {
"name": "Lloyd",
"homework": [90.0, 97.0, 75.0, 92.0],
"quizzes": [88.0, 40.0, 94.0],
"tests": [75.0, 90.0]
}
alice = {
"name": "Alice",
"homework": [100.0, 92.0, 98.0, 100.0],
"quizzes": [82.0, 83.0, 91.0],
"tests": [89.0, 97.0]
}
tyler = {
"name": "Tyler",
"homework": [0.0, 87.0, 75.0, 22.0],
"quizzes": [0.0, 75.0, 78.0],
"tests": [100.0, 100.0]
}

# Add your function below!
def average(numbers):
    total = sum(numbers)
    total = float(total)
    return total/len(numbers)
def get_average(student):
    homework_ave=average(student["homework"])
    quizzes_ave=average(student["quizzes"])
    tests_ave=average(student["tests"])
    return 0.1 * average(student["homework"]) + 0.3 *                           average(student["quizzes"]) + 0.6 * average(student["tests"])
def get_letter_grade(score):
    if 90 <= score:
        return "A"
    elif 80 <= score:
        return "B"
    elif 70 <= score:
        return "C"
    elif 60 <= score:
        return "D"
    else:
        return "F"
print get_letter_grade(get_average(lloyd))
def get_class_average(students):
    results = []
    for student in students:
        results.append(get_average(student))
    return average(results)
students = [lloyd, alice, tyler]
print get_class_average(students)
print get_letter_grade(get_class_average(students))

只是平均：Codecademy

4 个答案: