from dotenv import load_dotenv
load_dotenv()
from hyperliquid.info import Info
from hyperliquid.utils import constants
TESTNET_API_URL = constants.TESTNET_API_URL
info = Info(TESTNET_API_URL, skip_ws=False)
mids = info.all_mids()
print("Backend SDK 测试:", mids.get("BTC", "N/A"))