学生管理系统 更新学生信息没做出来，找个大神补全下。谢谢。
# 记录：
# bug:操作后若退出需要两次退出才行。 待修复
# 下一步：链接redis进行使用。
# 更新学生库信息 待完成 import re
import redis,chardet
class stu_card:
cont = {}
def main(self, student):
print("")
print("1 : 增加学生信息卡；2 : 删除学生信息卡；\n3 : 查看学生信息卡；4 : 修改学生信息卡；\n5 : 查看所有学生信息卡；6 : 退出学生信息系统；\n7：更新学生库信息")
num = input("请选择所需功能：")
if num == "":
self.add_card()
return False
elif num == "":
self.del_card()
return False
elif num == "":
self.show_card()
return False
elif num == "":
self.edit_card()
return False
elif num == "":
self.all_card()
self.main(student)
return False
elif num == "":
print("您已退出该系统")
return False
elif num == "":
self.stu_upd()
return False
elif num == "":
self.main(student)
return False
else:
print("操作错误,自动退出")
return False # 添加学生 引导并获取值
def add_card(self):
self.cont = {}
name = input("请输入姓名:")
self.check_input(1, name)
sax = input("请输入性别: (男/女)")
self.check_input(2, sax)
age = input("请输入年龄: (数字)")
self.check_input(3, age)
stu_nu = input("请输入学号:(数字)")
self.check_input(4, stu_nu)
self.info_card() # 删除学生
def del_card(self):
if len(student) == 0:
print("学生卡为空,请及时添加!")
else:
for nu, stu in enumerate(student):
print(nu + 1, "号学生:", "姓名：", stu['name'], "性别：", stu['sax'], "年龄：", stu['age'], "学号：", stu['stu_nu'])
del_nu = input("请选择要删除的学生编号:")
del_nu = int(del_nu) - 1
if del_nu <= len(student):
r.hdel('users',del_nu)
student.pop(del_nu)
print("删除成功!")
else:
print("信息有误,操作失败")
self.main(student) # 搜索学生 引导并获取值
def show_card(self):
print("精确搜索：\n 1 姓名；2 学号；\n范围搜索：\n 3 性别；4 年龄段(以空格隔开)； ")
search = int(input("请选择搜索条件:"))
if search == 1:
name = input("请输入姓名:")
self.check_input(1, name)
self.search('name')
elif search == 2:
stu_nu = input("请输入学号:")
self.check_input(4, stu_nu)
self.search('stu_nu')
elif search == 3:
sax = input("请输入性别:")
self.check_input(2, sax)
self.search('sax')
elif search == 4:
age = input("请输入年龄段:")
age = self.check_input(5, age)
self.search('age', age)
else:
return False # 编辑学生信息 引导并获取值
def edit_card(self, ):
self.all_card()
edit = input("请输入学生编号进行修改:")
self.all_card(nu=int(edit)) # 提交学生修改、添加
def info_card(self, num=-1):
if num == -1:
student.append(self.cont)
r.hset('users',r.hlen('users'),str(self.cont))
print("学生：", self.cont['name'], "信息添加成功")
self.cont = {}
self.main(student)
elif num >= 0:
student[num] = self.cont
r.hset('users', num, str(self.cont))
print("学生：", self.cont['name'], "信息更新成功")
self.cont = {}
self.main(student)
elif num >= len(student):
print("信息有误,操作失败")
self.main(student)
return False # 处理显示信息
def all_card(self, stu=[], nu=-1):
if nu == -1:
if stu == []:
if len(student) == 0:
print("当前没有学生信息,请及时添加!")
else:
for nu, stu in enumerate(student):
print(nu + 1, "号学生:", "姓名：", stu['name'], "性别：", stu['sax'], "年龄：", stu['age'], "学号：",
stu['stu_nu'])
elif stu == ['no search']:
print("搜索结果为空")
self.main(student)
else:
print("查询共有", len(stu), "位学生")
for nu, st in enumerate(stu):
print(nu + 1, "号学生:", "姓名：", st['name'], "性别：", st['sax'], "年龄：", st['age'], "学号：",
st['stu_nu'])
elif nu >= 1 and nu <= len(student):
self.cont = {}
nu = nu - 1
print("您正在修改", student[nu]['name'], "的信息，不修改请直接回车")
self.cont['name'] = student[nu]['name']
self.cont['sax'] = student[nu]['sax']
self.cont['age'] = student[nu]['age']
self.cont['stu_nu'] = student[nu]['stu_nu']
new_name = input("原姓名:%s;新姓名:" % (student[nu]['name']))
if len(new_name.strip(' ')) > 0:
del self.cont['name']
self.check_input(1, new_name)
new_sax = input("原性别:%s;新性别:" % (student[nu]['sax']))
if len(new_sax.strip(' ')) > 0:
del self.cont['sax']
self.check_input(2, new_sax)
new_age = input("原年龄:%s;新年龄:" % (student[nu]['age']))
if len(new_age.strip(' ')) > 0:
del self.cont['age']
self.check_input(3, new_age)
new_stu_nu = input("原学号:%s;新学号:" % (student[nu]['stu_nu']))
if len(new_stu_nu.strip(' ')) > 0:
del self.cont['stu_nu']
self.check_input(4, new_stu_nu)
self.info_card(nu)
else:
print("编号有误,请从新选择")
self.edit_card() # 检查输入信息
def check_input(self, nu, che):
if nu == 1:
if 'name' in self.cont.keys():
pass
else:
che = re.sub('[0-9]', ' ', che)
che = che.strip(' ')
if che == '':
print("姓名输入错误")
name = input("请输入姓名:")
self.check_input(1, name)
else:
self.cont['name'] = che
return True
elif nu == 2:
if 'sax' in self.cont.keys():
pass
else:
if che == "男" or che == "女":
self.cont['sax'] = che
return True
else:
print("性别格式错误")
sax = input("请输入性别: (男/女)")
self.check_input(2, sax)
elif nu == 3:
if 'age' in self.cont.keys():
pass
else:
if che.isdigit() and int(che) >= 6 and int(che) <= 70:
self.cont['age'] = che
return True
else:
print("学生年龄不合法!")
age = input("请输入年龄: (数字)")
self.check_input(3, age)
elif nu == 4:
if 'stu_nu' in self.cont.keys():
pass
else:
if che.isdigit():
self.cont['stu_nu'] = int(che)
return True
else:
print("学号不正确,请重新输入")
stu_nu = input("请输入学号:(数字)")
self.check_input(4, stu_nu)
elif nu == 5:
che = che.split(' ')
che[0] = int(che[0])
che[1] = int(che[1])
if che[0] < che[1]:
return che
else:
print("年龄不正确,请重新输入")
age = input("请输入年龄段(以空格隔开)：")
self.check_input(5, age)
else:
return False # 处理搜索学生信息
def search(self, nu, che=[]):
stu = []
if nu == 'name' or nu == 'sax' or nu == 'stu_nu':
for st in student:
if self.cont[nu] in st[nu]:
stu.append(st)
if stu == []:
stu = ['no search']
elif nu == 'age':
for st in student:
if che[0] <= st['age'] and che[1] >= st['age']:
stu.append(st)
if stu == []:
stu = ['no search']
self.all_card(stu)
#更新学生库 待完成
def stu_upd(self):
print("我也想更新啊")
self.main(student)
stu = stu_card()
pool=redis.ConnectionPool(host='localhost',port=6379,password="5tgbnhy67ujm")
r=redis.Redis(connection_pool=pool)
print("欢迎进入学生管理系统！")
print("功能详情：")
student=r.hvals('users') #获取学生信息
n_student=[]
for v in student:
#user=chardet.detect(v) #检测编码类型
user=v.decode('utf-8')
n_student.append(eval(user)) #str转dict并重组student
student=n_student
stu.main(student)
# while stu.main(student) != False:
# pass
问题源码
更加希望能够优化下。
redis存储学生信息用的是hash，key是自然数，val是字符串（json格式的），编码是utf-8
邮箱： hkdnxycz@outlook.com 谢谢