save project

1/1

+i=3
+username = "phthon"
+userpassword = "123456"
+while True:
+    if i>0:
+        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("用户名不存在,请重新输入!")
+            print("提示：您还有"+str(i)+"次登录机会")
+            continue
+        if password != userpassword:    
+            print("密码输入错误,请重新输入!")
+    else:
+        print("账号已被锁定")
+        exit()
+print("欢迎来到贝尔编程!")
\ No newline at end of file