python学生信息管理系统

#编译环境为python3 
 
#学生信息管理系统包括基本的信息功能，能够实现学生信息的输入，查询，增添和删除 
#基本框架：开始操作菜单，接收输入选项，调用相应的函数实现对应的功能，循环回到开始菜单， 
#操作菜单： 
 
student = [] 
def studentMeau(): 
  print('-'*30) 
  print('-------学生信息管理系统-------') 
  print('    1、添加学生信息') 
  print('    2、删除学生信息') 
  print('    3、查询学生信息')   
  print('    4、修改学生信息') 
  print('    5、退出') 
  print('-'*30) 
def appendStuInf(): 
  studentInf = {'Name':'','Id':'','Sex':'','Age':'','Project':''} 
  studentInf['Name'] = input('请输入学生姓名：') 
  studentInf['Id'] = input('请输入学生学号：') 
  studentInf['Sex'] = input('请输入学生性别：') 
  studentInf['Age'] = input('请输入学生年龄：') 
  studentInf['Project'] = input('请输入学生专业：') 
  student.append(studentInf) 
  #print(student) 
def deleteStuInf(): 
  num = input('请输入要删除学生的学号：') 
#  for i in range(len(student)): 
#    if student[i]['Id'] == num: 
#      student.remove(student[i]) 
#      break 
  for stu_inf in student: 
    if stu_inf['Id'] == num: 
      student.remove(stu_inf) 
      break 
#  print(student) 
def inquireStuInf(): 
  flag = False 
  num = input('请输入要查询学生的学号：') 
  for stu_inf in student: 
    if stu_inf['Id'] == num: 
      print('name: '+stu_inf['Name']+'\n') 
      print('Id: '+stu_inf['Id']+'\n') 
      print('Sex: '+stu_inf['Sex']+'\n') 
      print('Age: '+stu_inf['Age']+'\n') 
      print('Project: '+stu_inf['Project']+'\n') 
      flag = True 
      break 
  if flag == False: 
    print('没有查询到该生的信息！') 
def modifyStuInf(): 
  num = input('请输入要修改学生的学号：') 
  flag = False 
  for stu_inf in student: 
    if stu_inf['Id'] == num: 
      print('name: '+stu_inf['Name']+'\n') 
      print('Id: '+stu_inf['Id']+'\n') 
      print('Sex: '+stu_inf['Sex']+'\n') 
      print('Age: '+stu_inf['Age']+'\n') 
      print('Project: '+stu_inf['Project']+'\n') 
      flag = True 
      break 
  if flag == False: 
    print('没有该生的信息！') 
    return 
  print('1:姓名 ---- 2:学号 ---- 3:性别 ---- 4:年龄 ---- 5:专业 ---- 6:退出'+'\n') 
  while True: 
    choice = int(input("请输入选项序号：")) 
    if choice == 1:  
      stu_inf['Name'] = input('请重新输入姓名：') 
      print('姓名已更正为：'+stu_inf['Name']+'\n') 
    elif choice == 2: 
      stu_inf['Id'] = input('请重新输入学号：') 
      print('学号已更正为：'+stu_inf['Id']+'\n') 
       
    elif choice == 3: 
      stu_inf['Sex'] = input('请重新输入性别：') 
      print('性别已更正为：'+stu_inf['Sex']+'\n') 
    elif choice == 4: 
      stu_inf['Age'] = input('请重新输入年龄：') 
      print('年龄已更正为：'+stu_inf['Age']+'\n') 
    elif choice == 5: 
      stu_inf['Project'] = input('请重新输入专业：') 
      print('专业已更正为：'+stu_inf['Project']+'\n') 
    elif choice == 6: 
      print('修改完毕！') 
      break 
    else: 
      print('输入有误，不予执行!') 
while True: 
  studentMeau() 
  choice = int(input("请输入选项序号：")) 
  if choice == 1: 
    #添加学生信息 
    appendStuInf() 
  elif choice == 2: 
    #删除学生信息 
    deleteStuInf() 
  elif choice == 3: 
    #查询学生信息 
    inquireStuInf() 
  elif choice == 4: 
    #修改学生信息 
    modifyStuInf() 
  elif choice == 5: 
    print('谢谢使用！') 
    break 
  else: 
    print('输入有误，检查后重新输入！')