我正在使用在 VSCode 编辑器中看起来像这样的 jsonl 文件:
第一个.jsonl
1.{"ConnectionTime": 730669.644775033,"objectId": "eHFvTUNqTR","CustomName": "Relay Controller","FirmwareRevision": "FW V1.96","DeviceID": "F1E4746E-DCEC-495B-AC75-1DFD66527561","PeripheralType": 9,"updatedAt": "2016-12-13T15:50:41.626Z","Model": "DF Bluno","HardwareRevision": "HW V1.7","Serial": "0123456789","createdAt": "2016-12-13T15:50:41.626Z","Manufacturer": "DFRobot"}
2.{"ConnectionTime": 702937.7616419792, "objectId": "uYuT3zgyez", "CustomName": "Relay Controller", "FirmwareRevision": "FW V1.96", "DeviceID": "F1E4746E-DCEC-495B-AC75-1DFD66527561", "PeripheralType": 9, "updatedAt": "2016-12-13T08:08:29.829Z", "Model": "DF Bluno", "HardwareRevision": "HW V1.7", "Serial": "0123456789", "createdAt": "2016-12-13T08:08:29.829Z", "Manufacturer": "DFRobot"}
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第二个.jsonl
1.{"ConnectionTime": 730669.644775033,"objectId": "eHFvTUNqTR","CustomName": "Relay Controller","FirmwareRevision": "FW V1.96","DeviceID": "F1E4746E-DCEC-495B-AC75-1DFD66527561","PeripheralType": 9,"updatedAt": "2016-12-13T15:50:41.626Z","Model": "DF Bluno","HardwareRevision": "HW V1.7","Serial": "0123456789","createdAt": "2016-12-13T15:50:41.626Z","Manufacturer": "DFRobot"}
2.{"ConnectionTime": 702937.7616419792, "objectId": "uYuT3zgyez", "CustomName": "Relay Controller", "FirmwareRevision": "FW V1.96", "DeviceID": "F1E4746E-DCEC-495B-AC75-1DFD66527561", "PeripheralType": 9, "updatedAt": "2016-12-13T08:08:29.829Z", "Model": "DF Bluno", "HardwareRevision": "HW V1.7", "Serial": "0123456789", "createdAt": "2016-12-13T08:08:29.829Z", "Manufacturer": "DFRobot"}
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然后还有更多,具有随机数量的结束线/ EOF 标记。我想在每个文件的末尾有单行或空行。raise JSONDecodeError("Expecting value", s, err.value) from Nonejson.decoder.JSONDecodeError: Expecting value: line 2 column 1 (char 1)
使用这种方法,我不断收到此错误:
filenames = glob.glob("folder_with_all_jsonl/*.jsonl")
#read file by file, write file by file. Simple.
for f in filenames:
#path to the jsonl file/s
data_json = io.open(f, mode='r', encoding='utf-8-sig') # Opens in the JSONL file
data_python = extract_json(data_json)
#.....code omitted
for line in data_python: # it would fail here because of an empty line
print(line.get(objectId))
#and so on
我手动删除了一些额外的行,并且能够处理我的 2 个 jsonl 文件。
我看过这些 SO 板:
1>使用 Python 在 json 文件中删除新的换行符。
请给我提示/帮助。我会很感激的!!
我希望每个文件都采用这种格式:first.jsonl
1.{"ConnectionTime": 730669.644775033,"objectId": "eHFvTUNqTR","CustomName": "Relay Controller","FirmwareRevision": "FW V1.96","DeviceID": "F1E4746E-DCEC-495B-AC75-1DFD66527561","PeripheralType": 9,"updatedAt": "2016-12-13T15:50:41.626Z","Model": "DF Bluno","HardwareRevision": "HW V1.7","Serial": "0123456789","createdAt": "2016-12-13T15:50:41.626Z","Manufacturer": "DFRobot"}
2.{"ConnectionTime": 702937.7616419792, "objectId": "uYuT3zgyez", "CustomName": "Relay Controller", "FirmwareRevision": "FW V1.96", "DeviceID": "F1E4746E-DCEC-495B-AC75-1DFD66527561", "PeripheralType": 9, "updatedAt": "2016-12-13T08:08:29.829Z", "Model": "DF Bluno", "HardwareRevision": "HW V1.7", "Serial": "0123456789", "createdAt": "2016-12-13T08:08:29.829Z", "Manufacturer": "DFRobot"}
编辑: 我使用了正阳宋的回答和 chepner 的建议我实际上有两个 4gb 文件,这样做:
results = []
for f in glob.glob("folder_with_all_jsonl/*.jsonl"):
with open(f, 'r', encoding='utf-8-sig') as infile:
for line in infile:
try:
results.append(json.loads(line)) # read each line of the file
except ValueError:
print(f)
with open(f,'w', encoding= 'utf-8-sig') as outfile:
for result in results:
outfile.write(json.dumps(result) + "\n")
导致错误line 852, in start
_start_new_thread(self._bootstrap, ())
RuntimeError: can't start new thread
我在我的个人 Windows 机器上。
编辑 2:我迁移到我的工作机器,我能够解决这个问题。任何输入我们如何在个人机器上防止这种情况?像并行处理??