类型错误:“字节"类型的对象不是 JSON 可序列化的 python3 [英] TypeError: Object of type 'bytes' is not JSON serializable python3

问题描述

我在运行我的蜘蛛后收到此错误我也有一个管道，我将所有内容都转换为 JSON，但在我的项目返回后仍然出现此错误

i received this error after running my spider i also have a pipeline and i convert everything into JSON but still got this error after my item return

TypeError: 'bytes' 类型的对象不是 JSON 可序列化的

TypeError: Object of type 'bytes' is not JSON serializable

我的代码是

---

    import json
    import re
    import types

    SEPARATOR = '-'
    FILING_PROPERTIES = ['state_id', 'types', 'description', 'filing_parties', 'filed_on']
    DOCUMENT_PROPERTIES = ['types', 'title', 'blob_name', 'state_id', 'source_url']


    class AeeiPipeline(object):
        def process_item(self, item, spider):
            import pdb
            #
            if item.get('title', None):
                item['source_title'], item['title'] = self.title_case(item['title'])
            if item.get('description'):
                pdb.set_trace()
                item['description'] = self.title_case(item['description'])
            for filing in item.get("filings", []):
                if filing.get('description'):
                    pdb.set_trace()
                    filing['description'] = self.title_case(filing['description'])
                for _key in ["filing_parties", "types"]:
                    if not (_key in filing and filing[_key]):
                        filing[_key] = []
                    elif isinstance(filing[_key], str):
                        filing[_key] = [filing[_key]]

                for doc in filing.get("documents", []):
                    if doc.get('name'):
                        doc['name'] = doc['name']
                    if doc.get('title'):
                        doc['title'] = self.make_unicode(doc['title'])
                    if "types" in doc and not type(doc["types"]) is list:
                        doc["types"] = [doc["types"]]
            for _key in ["industries", "assignees", "major_parties", "source_assignees", "source_major_parties"]:
                if not (_key in item and item[_key]):
                    item[_key] = []
                elif isinstance(item[_key], str):
                    item[_key] = [item[_key]]

            for key, value in item.items():
                if type(item[key]) is str:
                    item[key] = value.strip()
            pdb.set_trace()
            item = json.dumps(item) + '\n'
            return item

        def title_case(self, title):
            title = self.make_unicode(title)
            return title, re.sub(u"[A-Za-z]+(('|\u2019)[A-Za-z]+)?",
                                 lambda mo: mo.group(0)[0].upper() + mo.group(0)[1:].lower(),
                                 title)

推荐答案

TypeError: Object of type 'PucItem' is not JSON serializable

这意味着您正在使用 Scrapy 的 Item 类

This means you are using Scrapy's Item class

解决方案是要么这样做

item = json.dumps(dict(item))

或者在你的 Spider 中，不要使用 Item 类来创建项目，只需使用像 item = {}

Or in your Spider, do NOT use Item class to create item, just use a Dict like item = {}

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