save project

diy2.py

+i=3
 username = "250"
 username = "250"
 userpassword = "cbb"
 userpassword = "cbb"
+
 while True:
 while True:
-    name = input("请输入用户名:")
-    password = input("请输入密码:")
-    if name == username and password == userpassword:
-        print("登录成功!")
-        break
-    if name != username:
-        print("sb!用户名!请重新输入")
-    else:
+    
+    if i>0:  
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name != username:
+            print("sb!用户名!请重新输入")
+            i=i-1
+            continue
         if password != userpassword:
         if password != userpassword:
             print("sb!密码错误!请重新输入")
             print("sb!密码错误!请重新输入")
+            i=i-1
+    else:
+        while True:
+            print("sb!")
+            break
 print("欢迎来到cs编程!")
 print("欢迎来到cs编程!")
\ No newline at end of file