save project

diy2.py

@@ -2,7 +2,7 @@ username = "python"
 userpassword = "123456"
 num=0
 while True:
-    if num<3
+    if num<3:
         name = input("请输入用户名:")
         password = input("请输入密码:")
         if name == username and password == userpassword:
@@ -17,4 +17,5 @@ while True:
             num+=1
     else:
         print("已锁定")
+        exit()
 print("欢迎来到贝尔编程!")
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