Python 在pycharm中使用或子句mongodb时出错

我在我的项目中使用mongodb是为了保存和检索数据，但当我在其中使用$or时，pycharm在$or处显示错误（用红色下划线），并说语句expected、found或_关键字 在mongo shell中使用相同的代码时，我能够得到结果，因此请帮助我，我的代码如下所示

import bottle
import pymongo


class GuestbookDAO(object):
    def __init__(self, database):
        self.db = database
        self.details = database.details

    def find_names(self):
        full_detail = []
        for each_detail in self.details.find():
            full_detail.append({'baseurl': each_detail['baseurl'], 'campaignsource': each_detail['campaignsource'],
                                'campaignmedium': each_detail['campaignmedium'], 'campaignterm': each_detail['campaignterm'],
                                'campaigncontent': each_detail['campaigncontent'], 'campaignname': each_detail['campaignname']})
        return full_detail

    def insert_details(self, baseurl, campaignsource, campaignmedium, campaignterm, campaigncontent, campaignname):
        newname = {'baseurl': baseurl, 'campaignsource': campaignsource, 'campaignmedium': campaignmedium,
                   'campaignterm': campaignterm, 'campaigncontent': campaigncontent, 'campaignname': campaignname}
        self.details.insert(newname)

    def search(self, string):
        full_details = []
        for detail in self.details.find({ $or: [{'baseurl': string}, {'campaignsource': string},
                                                 {'campaignmedium': string}, {'campaignterm': string},
                                                 {'campaigncontent': string}, {'campaignname': string}]}):
        full_details.append({'baseurl': detail['baseurl'], 'campaignsource': detail['campaignsource'],
                             'campaignmedium': detail['campaignmedium'], 'campaignterm': detail['campaignterm'],
                             'campaigncontent': detail['campaigncontent'], 'campaignname': detail['campaignname']})
        return full_details

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MongoShell使用javascript，但在pycharm中，您正在使用python

Javascript接受不在引号中的对象字符串键，python不接受

在Javascript中有效：

{$or:{a:1}}

要使其在python中有效，所有对象键必须在引号中：

 {"$or":{ "a":1}}