基于python 成绩转换工具

09.py

# 1、系统首先需要将学生的学号，姓名和成绩等信息录入
# 2、录入成绩完成后，系统自动判断成绩的等级
# 3、0-59为E级，60-69为D级，70-79为C级，80-89为B级，90-100为A级
# 4、最后，将学生学号，姓名，成绩等级显示出来
# 5、统计不同等级的百分比

import pandas as pd

class Stu:
    def __init__(self,no,name,score):
        self.no = no
        self.name = name
        self.score = score

    def get_rank(self):
        rank = 'E'
        if self.score>59 and self.score<70:
            rank = 'D'
        elif self.score>69 and self.score<80:
            rank = 'C'
        elif self.score > 79 and self.score < 90:
            rank = 'B'
        elif self.score > 89 and self.score < 101:
            rank = 'A'
        else:
            pass
        return rank

def to_dataframe(stus):
    names = []
    nos = []
    scs = []
    djs = []
    for a in stus:
        nos.append(a.no)
        names.append(a.name)
        scs.append(a.score)
        djs.append(a.get_rank())
    dire = {"学号": nos, "姓名": names, "成绩": scs, "等级": djs}
    p = pd.DataFrame(dire)
    return p


if __name__ == '__main__':
    f = True
    stu_list = []
    while f:
        no = input("请输入学号：")
        name = input("请输入姓名：")
        sc = int(input("请输入成绩："))
        s = Stu(no, name, sc)
        stu_list.append(s)
        a = input("是否继续输入(n：结束)")
        if a == 'n':
            f = False

    print("-----------------学生成绩----------------------")
    print(to_dataframe(stu_list))
    print("---------------------------------------------")