Python使用getattr调用函数不再用If..else,功能列表调用函数

Python使用getattr调用函数不再用If..else

import sys


def book_insert():
    pass

def student_insert():
    pass

def ...():
    ...


if __name__ == '__main__':
    funcs_list = ['book_insert', 'student_insert', 'load_infos', 'borrow_books', 'return_books', 'borrow_query',
                  'student_query', 'amount_books', 'visual_data']
    user_options = ['图书信息录入', '学生信息录入', '数据读取', '借阅', '归还', '查询借阅信息', '查询学生信息', '数量统计','数据可视化']
    while True:
        print('图书管理系统'.center(30, '-'))
        for index, opt in enumerate(user_options, 1):
            print(index, opt)
            choose_num = input('请选择：')
            choose_num = int(choose_num)
            try:
                getattr(sys.modules[__name__], funcs_list[choose_num - 1])()
                except Exception as err:
                    print(err)
                    print('选择功能发生错误')
                    break