save project

diy2.py

+username = "python"
+userpassword = "123456"
+i=3
+while True:
+    name = input("请输入用户名:")
+    if name!= username:
+        print("用户名错误!")
+        i-=1
+        continue
+    password = input("请输入密码:")
+    if name == username and password == userpassword:
+        print("登录成功!")
+        break
+    if name != username and password != userpassword:
+        print("用户名和密码错误!请重新输入")
+        continue
+    elif password!= userpassword:
+        print("密码错误!") 
+        continue
+    if i<0:
+        print("您的账号已被锁定")
+print("欢迎来到贝尔编程!")
\ No newline at end of file