python - 遍历 PyMongo 游标作为键值对

Question

是否可以将 pymongoCursor作为键值对进行迭代，例如dict? 我正在使用 python 2.6 和 pymongo 1.9。

我试过这个：

import pymongo
mongo = pymongo.Connection('localhost')
mongo_db = mongo['my_database']
mongo_coll = mongo_db['my_collection']
cursor = mongo_coll.find()
records = dict([(record_id, record) for record_id, record in mongo_cursor])

但我得到了错误：

ValueError: too many values to unpack

Answer 1

尝试：

records = dict((record['_id'], record) for record in cursor)

Answer 2

这是我用来从 MongoDB 游标构建 JSON 响应的 python 功能

def build_contacts_cursor(cursor):
    ''' Builds a JSON response for a given cursor
    '''
    response = json.loads('{}')
    response_to_append_to = response['results'] = []

    for idx, bp in enumerate(cursor):
        response_to_append_to.append(bp)

    return response