def get_company():
data =database.find({}, COLLECTION BASE, pon={'stock_name': True})
company = database.find({}, COLLECTION, BASE, pon={'company_name': True})
icompany = [i['stock_name'] for i in data]
company_list = [a['company_name'] for a in company]
return list(set(icompany).difference(set(company_list)))
取出mongo在另一个数据路中不存在的数据
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转载自blog.csdn.net/weixin_43883907/article/details/86215605
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