save project

diy2.py

+i=3
 username = "python"
 username = "python"
-userpassword = "123456"
-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!")
-    print()
+password= "123456"
+        while True:
+        if i>0
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i-=1
+        if name == username and password == userpassword:
+            print("登录成功!")
+        if name != username:
+            print("请重新输入用户名")
+            continue
+        if password != userpassword：
+            print("请重新输入密码")
+    else:
+        print("机会用完")
+        exit()
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file