save project

diy2.py

+username = "python"
+userpassword = "123456"
+i=3
+while True:
+    if i>3:
+        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("用户名错误，请重新输入")
+            continue()
+        if   password != userpassword :
+            print("密码错误，请重新输入")
+    else:
+        print("账号已封，请到我司用身份证登入。")
+        exec()
+print("欢迎来到贝尔编程!")
\ No newline at end of file