save project

diy2.py

+i=3
+while True:
+    i=i-1
+    if i>=0:
+        username = "zzy"
+        userpassword = "123456"
+        user=input("请输入用户名:")
+        password=input("请输入密码:")
+        if user == username and password==userpassword:
+            print("登录成功!欢迎来到贝尔编程！")
+            break
+        if user!=username:
+            print("账号不存在！请重新输入！")
+            continue
+        if password!=userpassword:
+            print("召唤师密码错误！请重新输入！")
+    else:
+            print("账号，密码已被锁定❥(^_-)")
+            exit()