demand_server/app/strategies/batch_date.py

from datetime import datetime
from zoneinfo import ZoneInfo

SHANGHAI_TZ = ZoneInfo("Asia/Shanghai")


def today_yyyymmdd() -> str:
    """当天批次日 / ODPS dt 基准日（Asia/Shanghai）。"""
    return datetime.now(SHANGHAI_TZ).strftime("%Y%m%d")