save project

diy.py

+i=3
+username = "python"
+userpassword = "123456"
+while True:
+    name=input('请输入账号')
+    password=input('请输入密码')
+    i=i-1
+    if i>0
+        if name==username and password==userpassword:
+            print('登陆成功')
+            break
+        elif name!=username:
+            print("账号错误请重新输入")
+        else:
+            print("密码错误请重新输入")
+    else:
+        print("账号已锁定")
+        exit()        
+print("欢迎来到贝编程")               
\ No newline at end of file