import random
import pandas as pd

used = []


class NotAccess(Exception):
    pass


# 学号随机
def getID():
    ID = []
    while len(ID) < 60:
        new_id = random.randint(0, 100) + 201800
        if new_id not in ID:
            ID.append(new_id)
    return ID


# 随机取学号
def getRandomID() -> int:
    while True:
        random_id = random.randint(0, 60) + 201800
        if random_id not in used:
            used.append(random_id)
            return random_id


# 成绩随机
def getScore() -> dict:
    scores = {}
    # 已随机人数
    tmp_num = 0
    # 零分
    for i in range(2):
        scores[getRandomID()] = 0
        tmp_num += 1
    # 60-70分
    for i in range(random.randint(3, 6)):
        scores[getRandomID()] = random.randint(60, 69) + (random.randint(0, 1) * 0.5)
        tmp_num += 1
    # 70-80分
    for i in range(random.randint(6, 10)):
        scores[getRandomID()] = random.randint(70, 79) + (random.randint(0, 1) * 0.5)
        tmp_num += 1
    # 80-90分
    for i in range(random.randint(25, 35)):
        scores[getRandomID()] = random.randint(80, 89) + (random.randint(0, 1) * 0.5)
        tmp_num += 1
    # 90-100分
    for i in range(60 - tmp_num):
        scores[getRandomID()] = random.randint(90, 99) + (random.randint(0, 1) * 0.5)
        tmp_num += 1
    return scores


def sortScore(scores) -> list:
    return sorted(scores.items(), key=lambda x: x[0])


def export(scores):
    fd = pd.DataFrame.from_dict(scores, orient='index')
    fd.to_csv('成绩.csv')
    print("csv已导出 成绩.csv")
    fd.to_excel('excel已导出 成绩.xlsx')
    try:
        with open('成绩.txt', 'w', encoding='utf-8') as f:
            if not f:
                raise NotAccess("不可达")
            f.write(fd.to_string())
    except FileNotFoundError:
        print("File cannot be access")
    except NotAccess as e:
        print(e)
    finally:
        print("已做出所有可能的导出")


if __name__ == '__main__':
    ID = getID()
    scores = getScore()
    # 释放内存
    del used
    export(scores)