save project

diy2.py

+
+i=3
 username = "python"
 username = "python"
 userpassword = "123456"
 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!")
-        break
-if name!=username
-    print("用户名不存在，请重新输入")
+if i>0:
+    while True:
+        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!")
+            break
+    if name!=username
+        print("用户名不存在，请重新输入")
+    else:
+        password!=userpassword
+        print("密码错误，请重新输入")
 else:
 else:
-    password!=userpassword   
-    print("密码错误，请重新输入")
-print("欢迎来到贝尔编程!")bre
+    print()
+print("欢迎来到贝尔编程!")
+
\ No newline at end of file