save project

diy2.py

+username = "python"
+userpassword = "123456"
+i=3
+while True:
+    name = input("请输入用户名:")
+    password = input("请输入密码:")
+    i-=1
+    if i>0:
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if username != name:
+            print('用户名不存在，请重新输入：')
+            print('温馨提示：您还有'+str(i)+'次机会')
+            continue
+        if userpassword != password:
+            print('密码输入错误，请重新输入：')
+        else:
+            print("欢迎来到贝尔编程!")
+    else:
+        print('你的账号已被锁定，请到我司解锁')
+        exit()
\ No newline at end of file