auto save

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-i = 3
 while True:
 while True:
-    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
-        elif name != username:
-            print ("用户名错误，请重新输入")
-            print("剩余"+str(i)+"次机会")
-        else:
-            print ("密码错误，请重新输入")
-            print("剩余"+str(i)+"次机会")
-    else: 
+    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
+    elif name != username:
+        print ("用户名错误，请重新输入")
+        
+    
+        print ("密码错误，请重新输入")
+       
+else: 
         print("账户已被锁定")
         print("账户已被锁定")
         exit()
         exit()
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")