save project

diy2.py

+i=3
+username = "python"
+userpassword = "123456"
+while True:
+    if i>0:
+        
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        if name == username and password == userpassword:
+            break
+            print("登录成功!")
+        if name != usernam:
+            print("用户名错误。")
+            continue
+            i-=1
+        if password != userpassword:
+            print("账号错误。")
+            i-=1 
+    else：
+        print("账号已被锁定 100年后再来")   
+        
+    
+print("欢迎来到贝尔编程!")
\ No newline at end of file