save project

diy2.py

+i=3
+username = "秦然"
+userpassword = "54188"
+while True:
+    if i>0:
+        i-=1
+        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("用户名错误，请重新输入")
+            continue
+        if password!=userpassword:
+            print("密码错误，请重新输入")
+    else:
+        print("三次都错，别输了")
+        exid()
+print("欢迎来到贝尔编程!")