"""运输计划：内置山峡/云栋客户判定（合同可免）""" from typing import Optional INTERNAL_CUSTOMER_NAMES = frozenset( { "安庆市山峡化工有限公司", "安徽云栋化工有限公司", } ) def is_internal_customer_name(name: Optional[str]) -> bool: return (name or "").strip() in INTERNAL_CUSTOMER_NAMES
