1、账号密码输入次数
条件：1、输入用户密码
2、认证成功后显示欢迎信息
3、输错三次后锁定
user="pengchun"
password="pcwangjixuan"
f = open(‘user.log‘,‘r‘)
lock_file = f.read()
f.close()
count = 0
for i in range(3):
user1=input("please input your name:")
password1 = input("please input your passwor:")
for j in range(1):
if lock_file == user1:
print("该账号已锁定")
exit()
else:
continue
if user == user1 and password == password1:
print("验证成功")
break
else:
if i==2:
print("您尝试的次数过多,系统自动退出")
else:
print("登录失败,请重新输入")
count +=1
if count == 3 and user1 != "pengchun":
print("你使用的用户次数超过3次，系统即将锁定")
f = open("user.log", "w")
f.write("%s" %user1)
f.close()
2、多级菜单
原文地址：http://11273036.blog.51cto.com/11263036/1882067
