遇到问题--python--mongodb--pymongo--pymongo.errors.OperationFailure: $not cannot have a regex

情况

我们有一个 正则匹配的mongodb查询,查询pic_label不包含有冒号的记录，如下：

{"pic_label" : {"$not":/:/},"source":"guangxi"}

需要转换成pymongo的查询语句来查询,直接对应翻译成pymongo的语句如下：

def find_pic_structures():
    pics = []
    client = init_mongo_client()
    db = client['my_pic']
    collection = db['pic_structures']
    queryArgs = {"pic_label": { "$not":{"$regex":":"}}, "source": "guangxi"}
    searchRes = collection.find(queryArgs)
    for x in searchRes:
        pics.append(x)
        print(x)
    return pics

报错如下：

pymongo.errors.OperationFailure: $not cannot have a regex

完整报错如下：

/Users/zzq/workspace/myproject/venv/bin/python /Users/zzq/workspace/myproject/my_project/dao/pic_action.py
启动环境 dev
mongodb://127.0.0.1:27017
Tracebac