遍历多个 json 行答案

【问题标题】：iterate through multiple json lines遍历多个 json 行
【发布时间】：2018-12-22 08:53:33
【问题描述】：

我有一个包含数百行 JSON 行的文件。我写了一个小python脚本，可以让我提取一些数据，但它只适用于一行。我现在想知道如果文件中有多个行，我如何循环遍历文件中的所有行。到目前为止我所拥有的是：

import json
from pprint import pprint

"""with open('1st_run_fixed.json') as f:"""
with open('fixed.json') as f:
    data = json.load(f)

    print "--------------------------------------------";
    """get number of characters"""
    nchar = data["frames"]["frame"]["lps"]["lp"]["ncharacter"];
    print "Got "+nchar+" characters";
    for x in range (1,int(nchar)+1):
        x = str(x);
        print data["frames"]["frame"]["lps"]["lp"]["characters"]["char"+x]["code_ascii"]+"    "+data["frames"]["frame"]["lps"]["lp"]["characters"]["char"+x]["confidence"];
    print "--------------------------------------------";

适用于以下数据：

{"response":{"container":{"id":"41d6efcb-24d6-490d-8880-762255519b5f","timestamp":"2018-Jul-11 19:51:06.461665"},
"id":"00000002-0000-0000-0000-000000000015"},
"frames":{"frame":{"id":"5583","timestamp":"2016-Nov-30 13:05:27","lps":{"lp":{"licenseplate":"15451BBL","text":"15451BBL","wtext":"15451BBL","confidence":"20","bkcolor":"16777215","color":"16777215","type":"0","ntip":"11","cct_country_short":"","cct_state_short":"","tips":{"tip":{"poly":{"p":{"x":"1094","y":"643"},
"p":{"x":"1099","y":"643"},
"p":{"x":"1099","y":"667"},
"p":{"x":"1094","y":"667"}},
"bkcolor":"16777215","color":"0","code":"49","code_ascii":"1","confidence":"97"},
"tip":{"poly":{"p":{"x":"1103","y":"642"},
"p":{"x":"1113","y":"642"},
"p":{"x":"1112","y":"667"},
"p":{"x":"1102","y":"667"}},
"bkcolor":"16777215","color":"0","code":"53","code_ascii":"5","confidence":"89"},
"tip":{"poly":{"p":{"x":"1112","y":"640"},
"p":{"x":"1122","y":"640"},
"p":{"x":"1122","y":"666"},
"p":{"x":"1112","y":"666"}},
"bkcolor":"16777215","color":"0","code":"52","code_ascii":"4","confidence":"97"},
"tip":{"poly":{"p":{"x":"1123","y":"640"},
"p":{"x":"1132","y":"640"},
"p":{"x":"1131","y":"665"},
"p":{"x":"1123","y":"665"}},
"bkcolor":"16777215","color":"0","code":"53","code_ascii":"5","confidence":"97"},
"tip":{"poly":{"p":{"x":"1134","y":"640"},
"p":{"x":"1139","y":"640"},
"p":{"x":"1139","y":"664"},
"p":{"x":"1133","y":"664"}},
"bkcolor":"16777215","color":"0","code":"49","code_ascii":"1","confidence":"77"},
"tip":{"poly":{"p":{"x":"1154","y":"639"},
"p":{"x":"1163","y":"639"},
"p":{"x":"1163","y":"663"},
"p":{"x":"1153","y":"663"}},
"bkcolor":"16777215","color":"0","code":"66","code_ascii":"B","confidence":"97"},
"tip":{"poly":{"p":{"x":"1164","y":"638"},
"p":{"x":"1173","y":"638"},
"p":{"x":"1173","y":"663"},
"p":{"x":"1163","y":"663"}},
"bkcolor":"16777215","color":"0","code":"66","code_ascii":"B","confidence":"94"},
"tip":{"poly":{"p":{"x":"1191","y":"637"},
"p":{"x":"1206","y":"636"},
"p":{"x":"1205","y":"660"},
"p":{"x":"1190","y":"661"}},
"bkcolor":"16777215","color":"0","code":"76","code_ascii":"L","confidence":"34"},
"tip":{"poly":{"p":{"x":"1103","y":"655"},
"p":{"x":"1111","y":"655"},
"p":{"x":"1111","y":"667"},
"p":{"x":"1103","y":"667"}},
"bkcolor":"16777215","color":"0","code":"74","code_ascii":"J","confidence":"57"},
"tip":{"poly":{"p":{"x":"1103","y":"655"},
"p":{"x":"1111","y":"655"},
"p":{"x":"1111","y":"667"},
"p":{"x":"1103","y":"667"}},
"bkcolor":"16777215","color":"0","code":"74","code_ascii":"J","confidence":"57"},
"tip":{"poly":{"p":{"x":"1176","y":"638"},
"p":{"x":"1185","y":"637"},
"p":{"x":"1184","y":"661"},
"p":{"x":"1175","y":"662"}},
"bkcolor":"16777215","color":"0","code":"52","code_ascii":"4","confidence":"7"}},
"ncharacter":"8","characters":{"char1":{"poly":{"p":{"x":"1094","y":"643"},
"p":{"x":"1099","y":"643"},
"p":{"x":"1099","y":"667"},
"p":{"x":"1094","y":"667"}},
"bkcolor":"16777215","color":"0","code":"49","code_ascii":"1","confidence":"97"},
"char2":{"poly":{"p":{"x":"1103","y":"642"},
"p":{"x":"1113","y":"642"},
"p":{"x":"1112","y":"667"},
"p":{"x":"1102","y":"667"}},
"bkcolor":"16777215","color":"0","code":"53","code_ascii":"5","confidence":"89"},
"char3":{"poly":{"p":{"x":"1112","y":"640"},
"p":{"x":"1122","y":"640"},
"p":{"x":"1122","y":"666"},
"p":{"x":"1112","y":"666"}},
"bkcolor":"16777215","color":"0","code":"52","code_ascii":"4","confidence":"97"},
"char4":{"poly":{"p":{"x":"1123","y":"640"},
"p":{"x":"1132","y":"640"},
"p":{"x":"1131","y":"665"},
"p":{"x":"1123","y":"665"}},
"bkcolor":"16777215","color":"0","code":"53","code_ascii":"5","confidence":"97"},
"char5":{"poly":{"p":{"x":"1134","y":"640"},
"p":{"x":"1139","y":"640"},
"p":{"x":"1139","y":"664"},
"p":{"x":"1133","y":"664"}},
"bkcolor":"16777215","color":"0","code":"49","code_ascii":"1","confidence":"77"},
"char6":{"poly":{"p":{"x":"1154","y":"639"},
"p":{"x":"1163","y":"639"},
"p":{"x":"1163","y":"663"},
"p":{"x":"1153","y":"663"}},
"bkcolor":"16777215","color":"0","code":"66","code_ascii":"B","confidence":"97"},
"char7":{"poly":{"p":{"x":"1164","y":"638"},
"p":{"x":"1173","y":"638"},
"p":{"x":"1173","y":"663"},
"p":{"x":"1163","y":"663"}},
"bkcolor":"16777215","color":"0","code":"66","code_ascii":"B","confidence":"94"},
"char8":{"poly":{"p":{"x":"1191","y":"637"},
"p":{"x":"1206","y":"636"},
"p":{"x":"1205","y":"660"},
"p":{"x":"1190","y":"661"}},
"bkcolor":"16777215","color":"0","code":"76","code_ascii":"L","confidence":"34"}},
"det_time_us":"1072592","poly":{"p":{"x":"1088","y":"642"},
"p":{"x":"1210","y":"634"},
"p":{"x":"1210","y":"661"},
"p":{"x":"1087","y":"669"}}}},
"det_time_us":"1720812"}}}

但我也想让它适用于以下数据：

{"response":{"container":{"id":"80d996a1-c267-4fa4-b3f8-f61ff9fda198","timestamp":"2018-Jul-10 17:00:50.829709"},
"id":"00000002-0000-0000-0000-000000000002"},
"frames":{"frame":{"id":"398","timestamp":"2016-Nov-30 12:56:47.900000","lps":{"lp":{"licenseplate":"FRJ724","text":"FRJ724","wtext":"FRJ724","confidence":"67","bkcolor":"16777215","color":"16777215","type":"540122","ntip":"6","cct_country_short":"USA","cct_state_short":"NY","tips":{"tip":{"poly":{"p":{"x":"1553","y":"249"},
"p":{"x":"1559","y":"249"},
"p":{"x":"1559","y":"267"},
"p":{"x":"1553","y":"267"}},
"bkcolor":"16777215","color":"0","code":"70","code_ascii":"F","confidence":"88"},
"tip":{"poly":{"p":{"x":"1561","y":"248"},
"p":{"x":"1568","y":"248"},
"p":{"x":"1568","y":"267"},
"p":{"x":"1561","y":"267"}},
"bkcolor":"16777215","color":"0","code":"82","code_ascii":"R","confidence":"96"},
"tip":{"poly":{"p":{"x":"1569","y":"248"},
"p":{"x":"1575","y":"248"},
"p":{"x":"1576","y":"267"},
"p":{"x":"1569","y":"267"}},
"bkcolor":"16777215","color":"0","code":"74","code_ascii":"J","confidence":"96"},
"tip":{"poly":{"p":{"x":"1585","y":"248"},
"p":{"x":"1591","y":"248"},
"p":{"x":"1591","y":"267"},
"p":{"x":"1585","y":"267"}},
"bkcolor":"16777215","color":"0","code":"55","code_ascii":"7","confidence":"94"},
"tip":{"poly":{"p":{"x":"1593","y":"248"},
"p":{"x":"1600","y":"248"},
"p":{"x":"1600","y":"267"},
"p":{"x":"1593","y":"267"}},
"bkcolor":"16777215","color":"0","code":"50","code_ascii":"2","confidence":"88"},
"tip":{"poly":{"p":{"x":"1602","y":"248"},
"p":{"x":"1607","y":"248"},
"p":{"x":"1607","y":"266"},
"p":{"x":"1602","y":"266"}},
"bkcolor":"16777215","color":"0","code":"52","code_ascii":"4","confidence":"99"}},
"ncharacter":"6","characters":{"char1":{"poly":{"p":{"x":"1553","y":"249"},
"p":{"x":"1559","y":"249"},
"p":{"x":"1559","y":"267"},
"p":{"x":"1553","y":"267"}},
"bkcolor":"16777215","color":"0","code":"70","code_ascii":"F","confidence":"88"},
"char2":{"poly":{"p":{"x":"1561","y":"248"},
"p":{"x":"1568","y":"248"},
"p":{"x":"1568","y":"267"},
"p":{"x":"1561","y":"267"}},
"bkcolor":"16777215","color":"0","code":"82","code_ascii":"R","confidence":"96"},
"char3":{"poly":{"p":{"x":"1569","y":"248"},
"p":{"x":"1575","y":"248"},
"p":{"x":"1576","y":"267"},
"p":{"x":"1569","y":"267"}},
"bkcolor":"16777215","color":"0","code":"74","code_ascii":"J","confidence":"96"},
"char4":{"poly":{"p":{"x":"1585","y":"248"},
"p":{"x":"1591","y":"248"},
"p":{"x":"1591","y":"267"},
"p":{"x":"1585","y":"267"}},
"bkcolor":"16777215","color":"0","code":"55","code_ascii":"7","confidence":"94"},
"char5":{"poly":{"p":{"x":"1593","y":"248"},
"p":{"x":"1600","y":"248"},
"p":{"x":"1600","y":"267"},
"p":{"x":"1593","y":"267"}},
"bkcolor":"16777215","color":"0","code":"50","code_ascii":"2","confidence":"88"},
"char6":{"poly":{"p":{"x":"1602","y":"248"},
"p":{"x":"1607","y":"248"},
"p":{"x":"1607","y":"266"},
"p":{"x":"1602","y":"266"}},
"bkcolor":"16777215","color":"0","code":"52","code_ascii":"4","confidence":"99"}},
"det_time_us":"776874","poly":{"p":{"x":"1543","y":"237"},
"p":{"x":"1618","y":"237"},
"p":{"x":"1618","y":"274"},
"p":{"x":"1543","y":"274"}}}},
"det_time_us":"1883017"}}}
{"response":{"container":{"id":"fa75e8f8-1b44-4f2f-a09b-6fe3b801ca1b","timestamp":"2018-Jul-10 17:00:55.863641"},
"id":"00000002-0000-0000-0000-000000000002"},
"frames":{"frame":{"id":"399","timestamp":"2016-Nov-30 12:56:48","lps":{"lp":{"licenseplate":"FRJ724","text":"FRJ724","wtext":"FRJ724","confidence":"47","bkcolor":"16777215","color":"16777215","type":"540122","ntip":"6","cct_country_short":"USA","cct_state_short":"NY","tips":{"tip":{"poly":{"p":{"x":"1553","y":"248"},
"p":{"x":"1560","y":"248"},
"p":{"x":"1560","y":"266"},
"p":{"x":"1554","y":"266"}},
"bkcolor":"16777215","color":"0","code":"70","code_ascii":"F","confidence":"96"},
"tip":{"poly":{"p":{"x":"1561","y":"248"},
"p":{"x":"1568","y":"248"},
"p":{"x":"1568","y":"267"},
"p":{"x":"1561","y":"267"}},
"bkcolor":"16777215","color":"0","code":"82","code_ascii":"R","confidence":"98"},
"tip":{"poly":{"p":{"x":"1569","y":"247"},
"p":{"x":"1576","y":"247"},
"p":{"x":"1576","y":"267"},
"p":{"x":"1569","y":"267"}},
"bkcolor":"16777215","color":"0","code":"74","code_ascii":"J","confidence":"96"},
"tip":{"poly":{"p":{"x":"1586","y":"248"},
"p":{"x":"1592","y":"248"},
"p":{"x":"1592","y":"267"},
"p":{"x":"1586","y":"267"}},
"bkcolor":"16777215","color":"0","code":"55","code_ascii":"7","confidence":"95"},
"tip":{"poly":{"p":{"x":"1593","y":"248"},
"p":{"x":"1600","y":"248"},
"p":{"x":"1600","y":"267"},
"p":{"x":"1593","y":"267"}},
"bkcolor":"16777215","color":"0","code":"50","code_ascii":"2","confidence":"86"},
"tip":{"poly":{"p":{"x":"1601","y":"249"},
"p":{"x":"1608","y":"249"},
"p":{"x":"1608","y":"265"},
"p":{"x":"1601","y":"265"}},
"bkcolor":"16777215","color":"0","code":"52","code_ascii":"4","confidence":"63"}},
"ncharacter":"6","characters":{"char7":{"poly":{"p":{"x":"1553","y":"248"},
"p":{"x":"1560","y":"248"},
"p":{"x":"1560","y":"266"},
"p":{"x":"1554","y":"266"}},
"bkcolor":"16777215","color":"0","code":"70","code_ascii":"F","confidence":"96"},
"char8":{"poly":{"p":{"x":"1561","y":"248"},
"p":{"x":"1568","y":"248"},
"p":{"x":"1568","y":"267"},
"p":{"x":"1561","y":"267"}},
"bkcolor":"16777215","color":"0","code":"82","code_ascii":"R","confidence":"98"},
"char9":{"poly":{"p":{"x":"1569","y":"247"},
"p":{"x":"1576","y":"247"},
"p":{"x":"1576","y":"267"},
"p":{"x":"1569","y":"267"}},
"bkcolor":"16777215","color":"0","code":"74","code_ascii":"J","confidence":"96"},
"char10":{"poly":{"p":{"x":"1586","y":"248"},
"p":{"x":"1592","y":"248"},
"p":{"x":"1592","y":"267"},
"p":{"x":"1586","y":"267"}},
"bkcolor":"16777215","color":"0","code":"55","code_ascii":"7","confidence":"95"},
"char11":{"poly":{"p":{"x":"1593","y":"248"},
"p":{"x":"1600","y":"248"},
"p":{"x":"1600","y":"267"},
"p":{"x":"1593","y":"267"}},
"bkcolor":"16777215","color":"0","code":"50","code_ascii":"2","confidence":"86"},
"char12":{"poly":{"p":{"x":"1601","y":"249"},
"p":{"x":"1608","y":"249"},
"p":{"x":"1608","y":"265"},
"p":{"x":"1601","y":"265"}},
"bkcolor":"16777215","color":"0","code":"52","code_ascii":"4","confidence":"63"}},
"det_time_us":"600136","poly":{"p":{"x":"1543","y":"238"},
"p":{"x":"1618","y":"239"},
"p":{"x":"1619","y":"274"},
"p":{"x":"1543","y":"273"}}}},
"det_time_us":"1495308"}}}
{"response":{"container":{"id":"5c9c773c-a72a-488f-bc49-148dcd6cfa0a","timestamp":"2018-Jul-10 17:01:01.756522"},
"id":"00000002-0000-0000-0000-000000000002"},
"frames":{"frame":{"id":"400","timestamp":"2016-Nov-30 12:56:48.100000","lps":{"lp":{"licenseplate":"FRJ724","text":"FRJ724","wtext":"FRJ724","confidence":"47","bkcolor":"16777215","color":"16777215","type":"540122","ntip":"6","cct_country_short":"USA","cct_state_short":"NY","tips":{"tip":{"poly":{"p":{"x":"1553","y":"248"},
"p":{"x":"1560","y":"248"},
"p":{"x":"1560","y":"266"},
"p":{"x":"1554","y":"266"}},
"bkcolor":"16777215","color":"0","code":"70","code_ascii":"F","confidence":"96"},
"tip":{"poly":{"p":{"x":"1561","y":"248"},
"p":{"x":"1568","y":"248"},
"p":{"x":"1568","y":"267"},
"p":{"x":"1561","y":"267"}},
"bkcolor":"16777215","color":"0","code":"82","code_ascii":"R","confidence":"98"},
"tip":{"poly":{"p":{"x":"1569","y":"247"},
"p":{"x":"1576","y":"247"},
"p":{"x":"1576","y":"267"},
"p":{"x":"1569","y":"267"}},
"bkcolor":"16777215","color":"0","code":"74","code_ascii":"J","confidence":"96"},
"tip":{"poly":{"p":{"x":"1586","y":"248"},
"p":{"x":"1592","y":"248"},
"p":{"x":"1592","y":"267"},
"p":{"x":"1586","y":"267"}},
"bkcolor":"16777215","color":"0","code":"55","code_ascii":"7","confidence":"95"},
"tip":{"poly":{"p":{"x":"1593","y":"248"},
"p":{"x":"1600","y":"248"},
"p":{"x":"1600","y":"267"},
"p":{"x":"1593","y":"267"}},
"bkcolor":"16777215","color":"0","code":"50","code_ascii":"2","confidence":"86"},
"tip":{"poly":{"p":{"x":"1601","y":"249"},
"p":{"x":"1608","y":"249"},
"p":{"x":"1608","y":"265"},
"p":{"x":"1601","y":"265"}},
"bkcolor":"16777215","color":"0","code":"52","code_ascii":"4","confidence":"63"}},
"ncharacter":"6","characters":{"char13":{"poly":{"p":{"x":"1553","y":"248"},
"p":{"x":"1560","y":"248"},
"p":{"x":"1560","y":"266"},
"p":{"x":"1554","y":"266"}},
"bkcolor":"16777215","color":"0","code":"70","code_ascii":"F","confidence":"96"},
"char14":{"poly":{"p":{"x":"1561","y":"248"},
"p":{"x":"1568","y":"248"},
"p":{"x":"1568","y":"267"},
"p":{"x":"1561","y":"267"}},
"bkcolor":"16777215","color":"0","code":"82","code_ascii":"R","confidence":"98"},
"char15":{"poly":{"p":{"x":"1569","y":"247"},
"p":{"x":"1576","y":"247"},
"p":{"x":"1576","y":"267"},
"p":{"x":"1569","y":"267"}},
"bkcolor":"16777215","color":"0","code":"74","code_ascii":"J","confidence":"96"},
"char16":{"poly":{"p":{"x":"1586","y":"248"},
"p":{"x":"1592","y":"248"},
"p":{"x":"1592","y":"267"},
"p":{"x":"1586","y":"267"}},
"bkcolor":"16777215","color":"0","code":"55","code_ascii":"7","confidence":"95"},
"char17":{"poly":{"p":{"x":"1593","y":"248"},
"p":{"x":"1600","y":"248"},
"p":{"x":"1600","y":"267"},
"p":{"x":"1593","y":"267"}},
"bkcolor":"16777215","color":"0","code":"50","code_ascii":"2","confidence":"86"},
"char18":{"poly":{"p":{"x":"1601","y":"249"},
"p":{"x":"1608","y":"249"},
"p":{"x":"1608","y":"265"},
"p":{"x":"1601","y":"265"}},
"bkcolor":"16777215","color":"0","code":"52","code_ascii":"4","confidence":"63"}},
"det_time_us":"457492","poly":{"p":{"x":"1543","y":"238"},
"p":{"x":"1618","y":"239"},
"p":{"x":"1619","y":"274"},
"p":{"x":"1543","y":"273"}}}},
"det_time_us":"1311946"}}}

我怎样才能完成这项工作？

我的脚本当前返回：

Traceback (most recent call last):
  File "read.py", line 8, in <module>
    data = json.load(f)
  File "/usr/lib/python2.7/json/__init__.py", line 291, in load
    **kw)
  File "/usr/lib/python2.7/json/__init__.py", line 339, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 367, in decode
    raise ValueError(errmsg("Extra data", s, end, len(s)))
ValueError: Extra data: line 68 column 1 - line 202 column 1 (char 3182 - 9548)

shell returned 1

当我运行大文件时。

【问题讨论】：

insertion of divider between JSON lines after extraction of data的可能重复

标签： python json python-2.7 loops dictionary

【解决方案1】：

我有一个包含数百行 JSON 行的文件。

不，你不知道，这就是问题所在。

数百个 JSON 文本不是有效的 JSON 文件。一个有效的 JSON 文件只是一个文本。这就是json.load 返回错误的原因。

数百个 JSON 文本，每一个都恰好适合一行，它们之间有换行符是其他格式的有效文件，如 JSONlines 或 NDJ。它仍然不是一个有效的 JSON 文件，所以你不能使用 json.load，但你可以使用 JSONlines 或 NDJ 库，或者像这样解析它：

with open('fixed.json') as f:
    for line in f:
        data = json.loads(line)
        # do stuff

再次，对于编写 JSONlines 文件，您可以使用 JSONlines 库，或者您可以确保每个 JSON 文本没有嵌入的换行符——如果您不指定非默认 @987654326，默认情况下实际上会发生这种情况@ 或 indent 参数——只需为每个值写出 json.dumps(data) + "\n"。

但是，数百个 JSON 文本，每个都占用多行，并不是一个有效的任何文件。

这其实是explained in the json module docs：

注意与pickle 和marshal 不同，JSON 不是框架协议，因此尝试使用相同的 fp 重复调用 dump() 来序列化多个对象将导致 JSON 无效文件。

“不是框架协议”的意思基本上是格式不明确。例如，如果您执行了json.dump(2, f)，然后执行了json.dump(3, f)，您将在文件中得到23。你从json.dump(23, f) 得到的东西是一样的。

如果您可以将文件修复为有效的文件，例如 JSONlines，那么这就是简单的解决方案。

如果你不能……

好吧，在标准化之前，有一个“JSON 文档”的概念，它基本上意味着一个 JSON 文本，它可以是数组或对象。 JSON 文档流不是模棱两可的。

由于这不是一种标准格式，您可能找不到它的解析器，因此您必须自己编写一个。

一种方法是使用json 模块中的raw_decode 方法。这将尝试解码 JSON 文本，可能在其后添加额外内容，并将索引返回到该额外内容。在您的情况下，哪个是下一个 JSON 文档。

由于数百个这样大小的对象并不算大，因此将整个文件读入内存然后解析它可能更简单，因此我们不必担心缓冲：

with open('fixed.json') as f:
    contents = f.read()
decoder = json.JSONDecoder()
while contents:
    data, idx = decoder.raw_decode(contents)
    do_stuff(data)
    contents = contents[idx:].lstrip()

请记住，这仅在您的文件是 JSON 文档流时才有效——也就是说，顶级值始终是 Array 或 Object。此外，如果你手动编辑这些文件，不像 JSONlines，它可以跳过一个错误的文本并继续解析其余的，现在有一种方法可以从这里的错误中恢复，因为你不知道下一个文档从哪里开始。

【讨论】：

感谢您的回复，但您的建议json.loads(line) 的建议似乎不起作用:(，我收到一个错误
@cerr 首先，答案并不暗示，它解释了为什么除非你修复你的数据否则它不会起作用。其次，“我得到一个错误”不是任何人都可以调试你的。在这种情况下，我可以猜到您遇到了什么错误，因为我已经知道为什么该代码不适用于您的数据，但总的来说，如果您希望人们帮助您，您需要向他们提供足够的信息来提供帮助。
我明白，但我确实得到了Traceback (most recent call last):\nFile "read.py", line 9, in <module>\ndata= json.loads(line)then File "/usr/lib/python2.7/json/__init__.py", line 339, in loads\nreturn _default_decoder.decode(s)
问题是：我有一个日志文件，其中包含大量信息和一些交错的 JSON 行。然后我对 JSON 行进行 grep 并将它们放入一个文件中以提取我感兴趣的数据...
@cerr 向我展示甚至不包含错误类型或消息的回溯的一部分并不是很有帮助，但这并不重要。文件的第一行不是 JSON 文本。所以如果你打电话给json.loads(line)，你会得到一个JSONDecodeError。您所拥有的不是 JSONlines 文件，也不是 JSON 文件，因此尝试将其解码为一个文件将会失败。我不知道该怎么解释。