Python [案例]实现学生信息库

[案例]实现学生信息库

	# coding:utf-8
	"""
	学生信息库
	"""
	students = {
	1: {
	'name': 'dewei',
	'age': 33,
	'class_number': 'A',
	'sex': 'boy'
	},
	2: {
	'name': '小慕',
	'age': 10,
	'class_number': 'B',
	'sex': 'boy'
	},
	3: {
	'name': '小曼',
	'age': 18,
	'class_number': 'A',
	'sex': 'girl'
	},
	4: {
	'name': '小高',
	'age': 18,
	'class_number': 'C',
	'sex': 'boy'
	},
	5: {
	'name': '小云',
	'age': 18,
	'class_number': 'B',
	'sex': 'girl'
	}
	}
	def check_user_info(**kwargs):
	if 'name' not in kwargs:
	return '没有发现学生姓名'
	if 'age' not in kwargs:
	return '没有发现学生姓名'
	if 'sex' not in kwargs:
	return '没有发现学生姓名'
	if 'class_number' not in kwargs:
	return '没有发现学生姓名'
	return True
	def get_all_students():
	for id_, value in students.items():
	print('学号: {},姓名{},年龄{},性别{},班级{}'.format(
	id_, value['name'], value['age'], value['sex'], value['class_number']
	))
	return students
	# result = get_all_students()
	# print('----', result)
	def add_student(**kwargs):
	check = check_user_info(**kwargs)
	if check != True:
	print(check)
	return
	id_ = max(students) + 1
	students[id_] = {
	'name': kwargs['name'],
	'age': kwargs['age'],
	'sex': kwargs['sex'],
	'class_number': kwargs['class_number']
	}
	# add_student(name='小白', age=19, class_number='A', sex='boy')
	# get_all_students()
	def delete_student(student_id):
	if student_id not in students:
	print('{}并不存在'.format(student_id))
	else:
	user_info = students.pop(student_id)
	print('学号是{}, {}同学的信息已经被删除了'.format(student_id, user_info['name']))
	# delete_student(1)
	# add_student(name='小白', age=19, class_number='A', sex='boy')
	# get_all_students()
	def update_student(student_id, **kwargs):
	if student_id not in students:
	print('并不存在这个学号:{}'.format(student_id))
	check = check_user_info(**kwargs)
	if check != True:
	print(check)
	return
	students[student_id] = kwargs
	print('同学信息更新完毕')
	update_student(1, name='dewei.zhang', age=33, class_number='A', sex='boy')
	get_all_students()
	def get_user_by_id(student_id):
	return students.get(student_id)
	print(get_user_by_id(3))
	def search_users(**kwargs):
	values = list(students.values())
	key = None
	value = None
	result = []
	if 'name' in kwargs:
	key = 'name'
	value = kwargs[key]
	elif 'sex' in kwargs:
	key = 'sex'
	value = kwargs['sex']
	elif 'class_number' in kwargs:
	key = 'class_number'
	value = kwargs[key]
	elif 'age' in kwargs:
	key = 'age'
	value = kwargs[key]
	else:
	print('没有发现搜索的关键字')
	return
	for user in values:
	if user[key] == value:
	result.append(user)
	return result
	print('---------')
	# users = search_users(age=18)
	users = search_users(sex='girl')
	print(users)

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