使用 python 从 JSON 文件中删除一些特定对象，然后将文件推送到 Elasticsearch Index

Question

我有一个包含许多对象的大型 json 文件。我试图从这个获取的文件中删除一定数量的对象，因为它们包含公钥和东西.. 只是为了一个参考我有这样的东西命名为 download.json:

"osfamily": "Debian",
"sshrsakey":"Xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx2XXX",
"lsbmajdistrelease": "32",
"interfaces": "eth0,lo",
"physicalprocessorcount": 1,
"ec2_kernel_id": "pki-724545-724545",

我的 python 脚本从 SQS 队列中下载上述 json 文件并将其推送到 ES 服务器，如下所示：

import os
import json
import uuid
import time
import boto.sqs
import boto
from boto.sqs.connection import SQSConnection
from boto.sqs.message import Message
from boto.sqs.message import RawMessage

sqs = boto.sqs.connect_to_region("ap-southeast-1")
q = sqs.get_queue("Nishantqueue")

#text_file = open('download.json', 'w')
m = q.read(visibility_timeout=15)
if m == None:
  print "No message!"
else:
  with open('download.json', 'w') as json_data:
    print m.get_body()
    json_data.write(m.get_body())

#    clean_data = json.load(json_data)  ##
#    for element in clean_data:         ##
#      del element['sshdsakey','sshrsakey'] 
#      json_data.write(clean_data) ## 

    json_data.close()
    q.delete_message(m)
    print "Push To ES"
    os.system('./push_to_ES.sh')
    print "Cleaning the temporary json file"
    os.remove('download.json')
    print "++++++ SUCCESSFUL RUN +++++++"

现在您可以在评论部分看到，我正在尝试删除我不想要的对象，然后将其写入 download.json 文件并推送到 ES 。这个评论部分没有按照我的想法工作，并抛出类似：IOError: File not open for reading

任何帮助将不胜感激

Answer 1

以读写模式打开文件。

更改：-

with open('download.json', 'w') as json_data:

到

with open('download.json', 'r+') as json_data:

-------------编辑------

为什么不直接做以下事情：-

clean_data = json.loads(m.get_body())
for element in clean_data:
  del element['sshdsakey','sshrsakey'] 

#write clean_data to download.json  
json_data.write(clean_data)

q.delete_message(m)
print "Push To ES"
os.system('./push_to_ES.sh')
print "Cleaning the temporary json file"
os.remove('download.json')
print "++++++ SUCCESSFUL RUN +++++++"