save project

diy2.py

+username="python"
+userpassword="123456"
+n=1
+while True:
+    name=input("你的用户名")
+    password=input("你的密码")
+    if name==username and password==userpassword:
+        print("登入成功")
+        print("欢迎来到贝尔编程!")
+        break
+    elif n==3:
+        print("请待会登入")
+        break
+    elif name!=username:
+        print("用户名出错，请重新登入")
+        n=n+1
+    elif password!=userpassword:
+        print("密码出错，请重新登入")
+        n=n+1      
\ No newline at end of file