python学生信息管理系统——面向函数

# coding:utf-8
 
# @Author；dx
# @Time:2023-4-20
# @File:3.py
"""
    学生信息管理系统
"""
print('欢迎使用学生信息管理系统~>_<~')
students = {
    1: {
        'name': 'xiaoshu',
        'age': 18,
        'class_number': 6,
        'sex': 'female'
    },
    2: {
        'name': 'xiaoding',
        'age': 19,
        'class_number': 6,
        'sex': 'male'
    }
}
 
 
def get_all_students():
    for _id, value in students.items():
        print('学号{}，姓名{}，年龄{}，班级{}，性别{}'.format(_id, value['name'], value['age'], value['class_number'],
                                                          value['sex']))
    return students
 
 
def check_user_info(**kwargs):
    if 'name' not in kwargs:
        return '缺少学生姓名'
    if 'age' not in kwargs:
        return '缺少学生年龄'
    if 'class_number' not in kwargs:
        return '缺少学生班级'
    if 'sex' not in kwargs:
        return '缺少学生性别'
    return True
 
 
def add_students(**kwargs):
    check = check_user_info(**kwargs)
    if not check:
        print(check)
        return
    _id = max(students) + 1
 
    students[_id] = {
        'name': kwargs['name'],
        'age': kwargs['age'],
        'class_number': kwargs['class_number'],
        'sex': kwargs['sex']
    }
    return _id
 
 
def delete_students(students_id):
    if students_id not in students:
        print('{}不存在'.format(students_id))
    else:
        deleted_students = students.pop(students_id)
        print('学号为{}， 姓名为{}的学生已删除'.format(students_id, deleted_students['name']))
 
 
def update_students(students_id, **kwargs):
    if students_id not in students:
        print('不存在这个学号')
        return
    check = check_user_info(**kwargs)
    if not check:
        print(check)
        return
 
    students[students_id] = kwargs
    print('学生信息更新完毕！')
 
 
def get_user_by_id(students_id):
    return students.get(students_id)
 
 
def search_students(**kwargs):
    values = list(students.values())
    key = None
    value = None
    result = []
    if 'name' in kwargs:
        key = 'name'
        value = kwargs[key]
    elif 'age' in kwargs:
        key = 'age'
        value = kwargs[key]
    elif 'class_number' in kwargs:
        key = 'class_number'
        value = kwargs[key]
    elif 'sex' in kwargs:
        key = 'sex'
        value = kwargs[key]
    else:
        print('没有发现搜索的关键词')
        return
 
    for user in values:
        if user[key] == value:
            result.append(user)
        return result
 
 
while True:
    print('--' * 20)
    print('请选择服务：')
    print('1.查看学生信息')
    print('2.添加学生信息')
    print('3.修改学生信息')
    print('4.删除学生信息')
    print('5.退出学生信息管理系统')
    choose = int(input('请输入服务序号：'))
    if choose == 1:
        get_all_students()
        print('--' * 20)
    if choose == 2:
        name1 = input('请输入要添加的学生姓名：')
        age1 = int(input('请输入学生年龄：'))
        class_number1 = int(input('请输入学生班级：'))
        sex1 = input('请输入学生性别(male/famale)：')
        add_students(name=name1, age=age1, class_number=class_number1, sex=sex1)
        print('添加成功~，学生信息如下：')
        print(students[max(students)])
        print('--' * 20)
 
    if choose == 3:
        id_number = int(input('请输入已存在的学号：'))
        print('学号-{{{}}}-，对应的学生信息如下：\n{}'.format(id_number, students[id_number]))
        print('请选择要更改的学生信息：')
        print('1.学生姓名')
        print('2.学生年龄')
        print('3.学生班级')
        print('4.学生性别')
        number = int(input('请输入需要更改的序号：'))
        if number == 1:
            name1 = input('请输入学生姓名：')
            students[id_number]['name'] = name1
        if number == 2:
            age1 = int(input('请输入学生年龄：'))
            students[id_number]['age'] = age1
        if number == 3:
            class_number1 = int(input('请输入学生班级：'))
            students[id_number]['class_number'] = class_number1
        if number == 4:
            sex1 = input('请输入学生性别(male/famale)：')
            students[id_number]['sex'] = sex1
 
        print('更新后的学生信息如下：')
        print(students[id_number])
        print('--' * 20)
    if choose == 4:
        id_number = int(input('请输入学号：'))
        delete_students(id_number)
        print('--' * 20)
    if choose == 5:
        print('您已退出~')
        print('--' * 20)
        break