Python Codecademy Student Becomes the Teacher
Posted 十月的雨
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#三个学生的信息 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! #求一个list的平均值 def average(number): total=sum(number) total=float(total) return total/len(number) #求一个学生所有成绩的加权平均 def get_average(student): homework=average(student["homework"]) quizzes=average(student["quizzes"]) tests=average(student["tests"]) return homework*0.1+quizzes*0.3+tests*0.6 #根据分数分等级 def get_letter_grade(score): if score>=90: return ‘A‘ elif score>=80: return ‘B‘ elif score>=70: return ‘C‘ elif score>=60: return ‘D‘ else: return ‘F‘ #获取lloyd的等级 get_letter_grade(get_average(lloyd)) #将所有学生的成绩统计到新的列表中并求平均值 def get_class_average(students): results=[] for student in students: results.append(get_average(student)) return average(results) #学生信息 students=[lloyd,alice,tyler] #打印班级总平均分和等级 print get_class_average(students) print get_letter_grade(get_class_average(students))
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