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 == "1": self.add_card() return False elif num == "2": self.del_card() return False elif num == "3": self.show_card() return False elif num == "4": self.edit_card() return False elif num == "5": self.all_card() self.main(student) return False elif num == "6": print("您已退出该系统") return False elif num == "7": 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
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
