PyMongo is the official Python driver for MongoDB created and maintained by MongoDB, Inc. Please mention the version of PyMongo you're using.
PyMongo is the official Python driver for MongoDB created and maintained by MongoDB, Inc.
Note: Since PyMongo 3 is not backward compatible with PyMongo 2 (refer to the changelog for details), you should specify the version you're using in the body of your question.
I have document with fields:
a, b, c, d
Currently if I iterate over the collection with such documents, I get the full dictionary as output. Is there a way to get output in a key value pair with value of b as key and rest of the information as…
So... I'm running scrapyd on my ubuntu ec2 instance after following this post: http://www.dataisbeautiful.io/deploying-scrapy-ec2/
however I guess I can't get pymongo to connect to my MongoLabs mongo database, since the ubuntu ec2 scrapyd logs are…
I have a large collection with more that half a million of docs, which I need to updated continuously. To achieve this, my first approach was to use w=1 to ensure write result, which causes a lot of delay.
collection.update(
{'_id': _id},
…
I need test the accuracy of a server mongodb.
I am trying to insert a sequence of data, take the moment and it was sent to the database to know when it was inserted. I'm trying this:
#!/usr/bin/python
from pymongo import Connection
from datetime…
I'm trying to use the aggregate method on pymongo like so:
fnObjs.aggregate([
{'$match': {'sha1_duplicate': false}}
])
I'm getting :
NameError: global name 'false' is not defined
The query does works on the mongo cli.
I would like to use PyMongo’s bulk
write operation features which executes write operations
in batches in order to reduces the number of network round trips and increaseses rite throughput.
I also found here that it was possible to used 5000 as a…
On the mongo shell this returns a document just fine:
> db.orderbook_log.findOne({'time': { '$gte': new Date(2014, 9, 24, 17, 38, 20, 546000), '$lt': new Date(2014, 10, 24, 17, 39, 20, 546000)}})
//... returns document with this time stamp:
…
I'm currently investigating if it is possible to use structured numpy arrays more or less directly as documents for mongodb insert operations.
In all examples I have found
db.collection.insert(doc)
doc is always a Python dict, but I wonder if not…
Ordering in compound indexes matter. But does the ordering in reads/writes matter? Is mongodb smart enough to reorder the fields based on indexes available?
The code is in python. I read that it is preferable to pass in ordered dictionary using:…
For some queries in my application, I am using a SON manipulator to conveniently render database output. In some other cases, I just want the raw data.
So I add my manipulator thus:
db.add_son_manipulator(Renderer())
And here's my Renderer:
class…
When I ran the following code and killed it immediately(that means to abnormally exit), the CPU rate of Mongodb would go extremely high(around 100%):
#-*- encoding:UTF-8 -*-
import threading
import time
import pymongo
single_conn =…
Why is this query not using this index when searching documents like these?
My Query:
{
"unique_contact_method.enrichments": {
"$not": {
"$elemMatch": {
"created_by.name":enrichment_name
}}}}
My Index:
{ key: {…
I have the following data structure:
{
'url' : 'www.example.com',
'title' : 'This is a title',
'data' : [
[{'name': 'abcdefg'}, {'nmr': 'hijklmnop'}],
[{'name': 'hijklmnop'}, {'nmr': 'abcdefg'}]
]
},
{ …
I have a mongo database with a collection of 3.000.000 documents that I process with pymongo. I want to iterate once through all documents without updating the collection.
I tried to do that using four threads:
cursors =…
