Python,将 mongodump 的 bson 输出转换为 json 对象数组(字典)

Python, Convert bson output of mongodump to array of json objects (dictionaries)

我使用 mongodump 命令转储了一个 mongodb 集合。输出是一个包含这些文件的转储目录:

dump/
    |___coll.bson
    |___coll.metadata.json

如何将导出的文件打开到一组适用于 python 的词典中? 我尝试了以下并且 none 成功了:

with open('dump/coll.bson', 'rb') as f:
    coll_raw = f.read()
import json
coll = json.loads(coll_raw)

# Using pymongo
from bson.json_util import loads
coll = loads(coll_raw)

ValueError: No JSON object could be decoded

你应该试试:

from bson import BSON
with open('dump/coll.bson', 'rb') as f:
    coll_raw = f.read()

coll = bson.decode_all(coll_raw) 

我知道很久以前就有人回答过这个问题,但您可以尝试分别解码每个文档,然后您就会知道是哪个文档导致了问题。

我使用这个库:https://github.com/bauman/python-bson-streaming

from bsonstream import KeyValueBSONInput
f = open("restaurants.bson", 'rb')
stream = KeyValueBSONInput(fh=f)
for dict_data in stream:
    print dict_data
f.close()

我看到 25359 条记录,它们似乎都解码为类似的内容:

{u'_id': ObjectId('5671bb2e111bb7b9a7ce4d9a'),
 u'address': {u'building': u'351',
              u'coord': [-73.98513559999999, 40.7676919],
              u'street': u'West   57 Street',
              u'zipcode': u'10019'},
 u'borough': u'Manhattan',
 u'cuisine': u'Irish',
 u'grades': [{u'date': datetime.datetime(2014, 9, 6, 0, 0),
              u'grade': u'A',
              u'score': 2},
             {u'date': datetime.datetime(2013, 7, 22, 0, 0),
              u'grade': u'A',
              u'score': 11},
             {u'date': datetime.datetime(2012, 7, 31, 0, 0),
              u'grade': u'A',
              u'score': 12},
             {u'date': datetime.datetime(2011, 12, 29, 0, 0),
              u'grade': u'A',
              u'score': 12}],
 u'name': u'Dj Reynolds Pub And Restaurant',
 u'restaurant_id': u'30191841'}