python中引入json文件报错：json.decoder.JSONDecodeError: Expecting ',' delimiter: line 1 column 1780 (char 17

昨天还可以正常运行的python文件今天突然报错

PS C:\Users\18200\Desktop\python-wh> & D:/Python/Python37-32/python.exe c:/Users/18200/Desktop/python-wh/compare/main.py
Traceback (most recent call last):
  File "c:/Users/18200/Desktop/python-wh/compare/main.py", line 12, in <module>
    crawler.run()
  File "c:\Users\18200\Desktop\python-wh\compare\service\crawler.py", line 36, in run
    self.crawler()
  File "c:\Users\18200\Desktop\python-wh\compare\service\crawler.py", line 60, in crawler
    self.overall_parser(overall_information=overall_information)
  File "c:\Users\18200\Desktop\python-wh\compare\service\crawler.py", line 89, in overall_parser
    overall_information = json.loads(overall_information.group(0))
  File "D:\Python\Python37-32\lib\json\__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "D:\Python\Python37-32\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "D:\Python\Python37-32\lib\json\decoder.py", line 353, in raw_decode
    obj, end = self.scan_once(s, idx)
json.decoder.JSONDecodeError: Expecting ',' delimiter: line 1 column 1780 (char 1779)

根据搜到的解析:

JSONDecodeError告诉你很多数据在发生错误之前被成功解析;
这可能是因为此时存在无效数据（格式错误或损坏的JSON文档）或数据被截断

检查代码读取的json文件

暂时看不出，将文件format为json格式便于查看

果然文档末尾报错

多了一个**}**，删掉再次测试，继续报同样的错。扎心了。继续搜。。
借鉴https://stackoverflow.com/questions/33984903/json-decoder-jsondecodeerror-expecting-value-line-1-column-1-char-0

修改我的jsonload代码
原本是

with open('data/overall.json', 'r', encoding='utf-8') as f:
            overall_json = f.read()
        overall_json = json.loads(overall_json)

with open('data/area.json', 'r', encoding='utf-8') as f:
            area_json = f.read()
        area_json = json.loads(area_json)

修改为

with open('data/overall.json', 'r', encoding='utf-8') as jsonfile:
            # overall_json = f.read()
        overall_json = json.loads(overall_json)

with open('data/area.json', 'r', encoding='utf-8') as jsonfile:
            # area_json = f.read()
        area_json = json.loads(area_json)

依旧报错，心累。。看来照搬别人的方法暂时没有用，debug也看不出具体问题在哪，直到看到这个

似乎有点坑到自己，那就只能返回debug看错误了。一开始直接在报错语句这里设置断点找不到错误

往上一步走，看一下overall_information这个变量，将结果输出看看

将输出的变量整理后发现确实有问题

特别是对比源代码可以发现缺少了后面的括号
符合了上面说的所有错误，代码不对导致json数据引入时出现格式错误，这里的re.search(r'\{("id".*?)\}'需要修改以匹配上后面的所有括号
改为re.search(r'\{("id".*?)\}]\}'，终于成功！！

估计就是如上所说，爬虫的网页改了代码导致之前的正则无法匹配了吧，心累，果然，自己写才是正解。