save project

diy2.py

+i = 3
 username = "python"
 userpassword = "123456"
+mg = "long"
 while True:
-    name = input("请输入用户名:")
-    password = input("请输入密码:")
-    if name == username and password == userpassword:
-        print("登录成功!")
-        break
-    if name != username:
-        print("用户名不存在!")
-    elif password != userpassword:
-        print("密码输入错误!")
+    if i>0 :   
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i -= 1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name != username:
+            print("用户名不存在!")
+        elif password != userpassword:
+            print("密码输入错误!")
+    else:
+        print('你的账号已被锁定,是否找回?#是或不是')
+        z = input()
+        if z == '是':
+            g = input('请输入保密问题')
+            if g == mg:
+                print('保密问题正确')
+                userpassword = input('请输入新密码')
+                break
+            else:
+                exit()
 print("欢迎来到贝尔编程!")
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