06-Student Becomes the Teacher

最新推荐文章于 2024-09-20 22:38:00 发布

CrazyVertigo

最新推荐文章于 2024-09-20 22:38:00 发布

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分类专栏： Python笔记

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本文介绍了一个简单的Python程序，用于管理学生的作业、测验和考试成绩，并计算最终的平均分及对应的字母等级。通过定义多个函数来实现成绩计算和学生数据的处理。

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06-Student Becomes the Teacher

在Codeacademy上学习Python课程，刷题的笔记记录如下，欢迎交流！

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]
}

iii. Put It Together 3/9

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]
}
students = [lloyd, alice, tyler]

iv. For the Record 4/9

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]
}
students = [lloyd, alice, tyler]
for x in students:
    print x['name']
    print x['homework']
    print x['quizzes']
    print x['tests']

String it Together

i.reverse 7/15

def reverse(text):
    length = len(text)
    word = []
    while length > 0:
        word.append(text[length - 1])
        length -= 1
    return ''.join(word) #将字符串序列转换为字符串

ii. Just Weight and See 6/9

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)
    aver = float(total)/len(numbers)
    return aver

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

iii. Sending a Letter 7/9

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)
    aver = float(total)/len(numbers)
    return aver

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

def get_letter_grade(score):
    if 90<=score:
        return "A"
    elif 80<=score<90:
        return "B"
    elif 70<=score<80:
        return "C"
    elif 60<=score<70:
        return "D"
    else:
        return "F"

get_average(lloyd)

iv. Part of the Whole 8/9

#方法1：判断比较思想
def anti_vowel(text):
#    word='a'or'e'or'i'or'o'or'u'or'A'or'E'or'I'or'O'or'U'
    word=''
    for var in text:
        if  (var != 'a' and var !='e'and var !='i'and var !='o'and var !='u'and var !='A'and var !='E'and var !='I'and var !='O'and var !='U'):
            word = word + var
    return word 

#方法2：删除思想
def anti_vowel(text):
    removed = text
    vowel = ["a","e","i","o","u","A","E","I","O","U"]
    for x in text:
        for y in vowel:
            if x == y:
                removed = removed.replace(x,"")
    return removed

v. How is Everybody Doing? 9/9

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)
    aver = float(total)/len(numbers)
    return aver

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

def get_letter_grade(score):
    if 90<=score:
        return "A"
    elif 80<=score<90:
        return "B"
    elif 70<=score<80:
        return "C"
    elif 60<=score<70:
        return "D"
    else:
        return "F"       

students=[lloyd,alice,tyler]
def get_class_average(students):
    results=[]
    for student in students:    
        results.append(get_average(student))
    return average(results)

print get_class_average(students)
print get_letter_grade(get_class_average(students))