def main(): #定义main函数
while True:
menm()
choice=int(input('请选择'))
if choice in [0,1,2,3,4,5,6,7]: #判断输入的数字，进入相应的功能
if choice == 0:
answer=input('您确定要退出系统吗？y/n?')
if answer== 'y' or answer=='Y':
print('谢谢您的使用')
break
else:
continue
elif choice == 1:
insert() #录入学生信息
elif choice == 2:
search()#查询学生信息
elif choice == 3:
delete()#删除学生信息
elif choice ==4:
modify()#修改学生信息
elif choice == 5:
sort()#排序
elif choice == 6:
total()#统计学生人数
elif choice ==7:
show()#显示所有学生信息
def menm():#开始界面
print('======================学生信息管理系统===================')
print('======================功能菜单=========================')
print('tttttt1.录入学生信息')
print('tttttt2.查找学生信息')
print('tttttt3.删除学生信息')
print('tttttt4.修改学生信息')
print('tttttt5.排序')
print('tttttt6.统计学生总人数')
print('tttttt7.显示所有学生信息')
print('tttttt0.退出')
def insert():
pass
def search():
pass
def delete():
pass
def modify():
pass
def sort():
pass
def total():
pass
def show():
pass
if __name__ == '__main__': #以主程序的方式运行
main()
显示成这个样子就代表成功了
