相关疑难解决方法(0)

我有一个功能,用Pandas分析CSV文件,并生成一个包含摘要信息的dict.我想将结果作为Flask视图的响应返回.如何返回JSON响应？

@app.route("/summary")
def summary():
    d = make_summary()
    # send it back as json

我在使用Python查询文档上的聚合函数后从MongoDB返回的响应,它返回有效的响应,我可以打印它但不能返回它.

错误:

TypeError: ObjectId('51948e86c25f4b1d1c0d303c') is not JSON serializable

打印:

{'result': [{'_id': ObjectId('51948e86c25f4b1d1c0d303c'), 'api_calls_with_key': 4, 'api_calls_per_day': 0.375, 'api_calls_total': 6, 'api_calls_without_key': 2}], 'ok': 1.0}

但是当我试图返回时:

TypeError: ObjectId('51948e86c25f4b1d1c0d303c') is not JSON serializable

它是RESTfull调用:

@appv1.route('/v1/analytics')
def get_api_analytics():
    # get handle to collections in MongoDB
    statistics = sldb.statistics

    objectid = ObjectId("51948e86c25f4b1d1c0d303c")

    analytics = statistics.aggregate([
    {'$match': {'owner': objectid}},
    {'$project': {'owner': "$owner",
    'api_calls_with_key': {'$cond': [{'$eq': ["$apikey", None]}, 0, 1]},
    'api_calls_without_key': {'$cond': [{'$ne': ["$apikey", None]}, 0, 1]}
    }},
    {'$group': {'_id': "$owner",
    'api_calls_with_key': {'$sum': "$api_calls_with_key"},
    'api_calls_without_key': {'$sum': "$api_calls_without_key"}
    }}, …