Question

我通过TheGuardian.search_content()和TheGuardian.data_to_csv()方法使用Guardian Python API。第一个返回一个名为json_content的字典。第二个，遍历json_content并将其内容写入CSV文件。我的问题是，为什么TheGuardian.data_to_csv()方法会收到<class 'script_guardian.TheGuardian'>而不是<class 'dict'>？

如果我理解正确，TheGuardian.data_to_csv()只会收到TheGuardian类的实例。它与我使用的方法有什么关系？例如，抽象，静态或类方法

步骤：

>>> from script_guardian import TheGuardian
>>> tg = TheGuardian('2016-01-01', '2018-01-01')
>>> json_content = tg.search_content('education', 'relevance', 'education')
>>> json_content
<bound method Content.get_content_response of <theguardian.theguardian_content.Content object at 0x7f7bb9764c88>>
>>> type(json_content)
<class 'method'>

如何让search_content返回而不是方法本身？

我的完整代码：

import requests
from theguardian import theguardian_content
import csv

    class TheGuardian:

        def __init__(self, from_date='2016-01-01', to_date='2018-01-01'):
            self.from_date = from_date
            self.to_date = to_date

        def search_content(self, content='education', page_size=10, order_by='relevance', 
            api_key='test'):

            self.content = content
            self.page_size = page_size
            self.order_by = order_by
            self.api_key = api_key

            # create content
            params = {
                'from-date': self.from_date,
                'to_date': self.to_date,
                'order-by': self.order_by,
                'page-size': self.page_size,
                'q': self.content,
                'api': self.api_key
            }

            # create content
            content = theguardian_content.Content(**params)
            pdb.set_trace()
            json_content = content.get_content_response()

            # actual response
            return json_content

        def data_to_csv(self, json_content):

           self.json_content = json_content

            with open('guardian_data.csv','w') as csv_file:
                writer = csv.writer(csv_file, delimiter=',')
                writer.writerow(["webUrl", "webPublicationDate", "webTitle", "sectionName", 
                "apiUrl", "id", "isHosted", "sectionId", "type", "pillarId", "pillarName"])


                for result in json_content['response']['results']:
                    writer.writerow(
                        result["webUrl"],
                        result["webPublicationDate"],
                        result["webTitle"],
                        result["sectionName"],
                        result["apiUrl"],
                        result["id"],
                        result["isHosted"],
                        result["sectionId"],
                        result["type"],
                        result["pillarId"],
                        result["pillarName"]
                    )

Answer 1

由于您将data_to_csv作为类方法访问，因此data_to_csv(self,json_content)不完整。您应该将其定义为tg.data_to_csv(tg.search_content())并将搜索结果的结果传递给它，例如No test result files matching **\test-results.xml were found.

仔细查看此文档页面https://docs.python.org/2/tutorial/classes.html

处理oop中不同类型方法的返回

1 个答案: