Mypy：集合更新期间出现不兼容的类型错误

Question

Mypy returns 如果 set 使用 add()[=14 更新为新的 tuple 则出错=]

code.py

adgroups_by_campaign_id: Dict[CampaignId, Set[str]] = defaultdict(set)
for customer_id, campaign_ids in campaigns_per_customer_id.items():
    adgroups = get_adgroups_in_campaings(ads_client, customer_id, campaign_ids, adgroup_names)
    for adgroup in adgroups:
        adgroups_by_campaign_id[CampaignId(adgroup['campaign_id'])].add(
            (adgroup['adgroup_name'], adgroup['adgroup_resource_name']) -> RETURN ERROR
        )

错误正文

 error: Argument 1 to "add" of "set" has incompatible type "Tuple[str, str]"; expected "str"

据我所知，向集合中添加新的连音符是常见的做法。

The add() method can add a tuple object as an element in the set

为什么mypy认为不允许？

Answer 1

adgroups_by_campaign_id 被标记为 Dict[CampaignId, Set[str]] 意味着 mypy 将期望所有值都是包含字符串的集合，而不是字符串元组。

Set[str] 应该改为 Set[Tuple[str, str]].

Mypy：集合更新期间出现不兼容的类型错误

Mypy: incompatible type error during set update

python

types

typing

mypy