Python 7 Levels, L4, Unit 35, Student Performance Management System, I

Exercise 1:

stu_num = int(input("Please define the number of students:"))
cour_num = int(input("Please define the number of courses:"))
cour_name = []
stu_all = []#For storing all students
sum_list = []#For storing student's sum of scores
for i in range(cour_num):
    course = input("Please input the name of the course "+str(i+1)+":")
    cour_name.append(course)

for i in range(stu_num):
    student = []
    name = input("Please input the name of the student "+str(i+1)+":")
    student.append(name)
    stu_sum = 0
    for j in range(len(cour_name)):
        score = int(input("Please input score of "+name+"'s "+cour_name[j]))
        stu_sum += score
        student.append(score)
    student.append(stu_sum)
    sum_list.append(stu_sum)
    stu_avg = stu_sum/cour_num
    student.append(stu_avg)
    stu_all.append(student)

for i in range(len(stu_all)-1):
    for j in range(len(stu_all)-1 - i):
        if sum_list[j] < sum_list[j+1]:
            '''swap sum of scores'''
            s = sum_list[j]
            sum_list[j] = sum_list[j+1]
            sum_list[j+1] = s
            '''swap student'''
            stu1 = stu_all[j]
            stu_all[j] = stu_all[j+1]
            stu_all[j+1] = stu1


print("Name",end = "\t")
for i in range(len(cour_name)):
    print(cour_name[i],end = "\t")
print("Sum Scores\tAverage Score\tRanking")#output a new line
for i in range(len(stu_all)):
    for j in range(len(stu_all[i])):
        print(stu_all[i][j],end = "  \t")
    print(i+1)#output a new line

Exercise 2:

stu_num = int(input("Please input the number of students:"))
cour_name = ["French","Math","English"]
stu_all = []#for storing all students

for i in range(stu_num):
    student = []
    name = input("Please input the name of student "+str(i+1)+":")
    student.append(name)
    stu_sum = 0
    for j in range(len(cour_name)):
        score = int(input("Please input the score of "+name+"'s "+cour_name[j]))
        stu_sum += score
        student.append(score)
    student.append(stu_sum)
    stu_avg = stu_sum//len(cour_name)
    student.append(stu_avg)
    stu_all.append(student)

while True:
    number = int(input("Please input a number to see the course(1.French 2.Math 3.English 4.Sum Scores 5.Quit)"))
    if number == 5:
        print("Quit system")
        break
    elif number == 1 or number == 2 or number == 3 or number == 4:
        score_list = []
        for i in range(len(stu_all)):
            score_list.append(stu_all[i][number])
    else:
        print("Wrong input, please retry")
        continue

    '''bubble sort，based on sum scores'''
    for i in range(len(stu_all) - 1):
        for j in range(len(stu_all) - 1 - i):
            if score_list[j] < score_list[j + 1]:
                '''swap sum scores'''
                s = score_list[j]
                score_list[j] = score_list[j + 1]
                score_list[j + 1] = s
                '''swap student'''
                stu1 = stu_all[j]
                stu_all[j] = stu_all[j + 1]
                stu_all[j + 1] = stu1
    '''Travers to output'''
    print("Name", end="\t")
    for i in range(len(cour_name)):
        print(cour_name[i], end="\t")
    print("Sum Scores\tAverage Score\tRanking")  # output a new line
    for i in range(len(stu_all)):
        for j in range(len(stu_all[i])):
            print(stu_all[i][j], end="  \t")
        print(i + 1)  # output a new line