save project

diy2.py

 username = "wwwww"
 password = "123456"
+i=3
 while True:
-    name=input("请输入用户名:")
-    userpassword = input("请输入密码:")
-    if name == username and password == userpassword:
-        print("登录成功!")
-        break
-    elif name != username:
-            print("用户名不存在，请从新输入")  
+    if i>0:
+        name=input("请输入用户名:")
+        userpassword = input("请输入密码:")
+        i-=1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        elif name != username:
+            print("用户名不存在，请从新输入")
+        else:
+            print("密码错误，请从新输入")
     else:
-        print("密码错误，请从新输入")
+        print("次数用完了^_^*")
+        exit()
 print("欢迎来到贝尔编程!")
\ No newline at end of file