auto save

diy2.py

+i=3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 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 i>0: 
+        a=str(i) 
+        print("还有"+a+"次机会")  
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i=i-1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        else:
+            if name!= username:
+                print("用户名错误!请重新输入")
+                continue
+            if password != userpassword:
+                print("用户名错误!请重新输入")
     else:
     else:
-        if name!= username:
-            print("用户名错误!请重新输入")
-            continue
-        if password != userpassword:
-            print("用户名错误!请重新输入")
+        print("你的账号已锁定")
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file