1 学生管理系统
要求 能够储存 查询 修改 删除 学生信息（姓名、年龄、电话、住址等）
class StudentManagementSystem(object):
student_info_lst = []
@staticmethod
def show_mean():
"""显示所有功能"""
print("欢迎来到学生管理系统")
print("新增学生请输入 [1]:")
print("显示全部请输入 [2]:")
print("查询学生请输入 [3]:")
print("退出系统请输入 [0]:")
def add_student(self):
"""新增学员功能"""
print("--------新增学员功能------")
name = input('请输入姓名：')
age = input('请输入年龄：')
gender = input('请输入性别：')
phone = input('请输入手机号码：')
# print(name,age,gender,phone)
# 将用户输入的信息保存到一个字典中
dic = {}
dic['name'] = name
dic['age'] = age
dic['gender'] = gender
dic['phone'] = phone
# print(dic)
# 注意 将用户输入的信息保存到全局变量student_info_lst
# 列表中，让其他功能使用列表中的数据
self.student_info_lst.append(dic)
# print(student_info_lst)
print("新增成功！！！！！")
def show_all_student(self):
print('--------显示所有的学员--------')
if not self.student_info_lst:
print('还没有学员，请添加学员')
return
# 显示学员的信息
name = self.alignment('name', 15)
age = self.alignment('age', 15)
gender = self.alignment('gender', 15)
phone = self.alignment('phone', 15)
print(name, age, gender, phone)
for dic in self.student_info_lst:
# name = dic['name']
# age = dic['age']
# gender = dic['gender']
# phone = dic['phone']
# print('{}\t{}\t{}\t{}\t'.format(name, age, gender, phone))
name = self.alignment(dic['name'], 15)
age = self.alignment(dic['age'], 15)
gender = self.alignment(dic['gender'], 15)
phone = self.alignment(dic['phone'], 15)
print(name, age, gender, phone)
def alignment(self,s, space): # 矫正
"""动态获取空格长度"""
s1 = s.encode('gbk')
length = len(s1)
space = space - length
s = s + ' ' * space
return s
def search_student(self):
print('----------欢迎来到查询功能---------')
if self.student_info_lst:
name = input('请输入你想查询的学员姓名')
for dic in self.student_info_lst:
if dic['name'] == name:
print('name\tage\tgender\tphone')
name = dic['name']
age = dic['age']
gender = dic['gender']
phone = dic['phone']
print('{}\t{}\t{}\t{}\t'.format(name, age, gender, phone))
# 修改学员信息
# 需要将学员的信息传递到函数中
self.deal_student(dic)
break
else:
print('没有找到此学生')
else:
print('没有学员 请添加！！！！！')
def deal_student(self,dic):
"""修改和删除学员信息"""
action_str = input("【1】修改 【2】删除 【0】返回上一级菜单，请选择要执行的操作")
if action_str == '1':
name = self.modify_student(dic['name'], '请输入姓名：')
age = self.modify_student(dic['age'], '请输入年龄：')
gender = self.modify_student(dic['gender'], '请输入性别：')
phone = self.modify_student(dic['phone'], '请输入电话：')
dic['name'] = name
dic['age'] = age
dic['gender'] = gender
dic['phone'] = phone
print('-------修改成功----------')
elif action_str == '2':
self.student_info_lst.remove(dic)
print('--------删除成功---------')
elif action_str == '0':
pass
def modify_student(self,old_value, msg):
new_value = input(msg)
if new_value.strip():
return new_value
else:
return old_value
while True:
StudentManagementSystem.show_mean()
sms = StudentManagementSystem()
action_str = input("请输入你想选的操作")
lst = ['0', '1', '2', '3']
if action_str in lst:
if action_str == "1":
sms.add_student()
elif action_str == "2":
sms.show_all_student()
elif action_str == "3":
sms.search_student()
elif action_str == "0":
print("------欢迎下次管理-----")
break
else:
print("-------sb 输入错了，请重新输入---------")2 斐波那契数列的生成器方式
class Fibonacci():
def __init__(self, all_num):
self.all_num = all_num
self.a = 1
self.b = 1
self.current_num = 0
def __iter__(self):
return self # 返回自己 调用自己的__new函数
def __next__(self):
if self.all_num <= 2:
self.current_num += 1
if self.current_num == 3:
raise StopIteration
return self.a
else:
if self.current_num < self.all_num:
ret = self.a
self.a, self.b = self.b, self.a + self.b
self.current_num+=1
return ret
else:
raise StopIteration
for i in Fibonacci(10):
print(i)