Iron Python and PyMongo Error - mongodb

Question

I'm getting this error when I try to connect to mongodb (using pymongo) with Iron Python...
Traceback (most recent call last):
File "test.py", line 3, in <module>
File "c:\Program Files (x86)\IronPython 2.7\lib\site-packages\pymongo\connecti
on.py", line 179, in __init__
File "c:\Program Files (x86)\IronPython 2.7\lib\site-packages\pymongo\mongo_cl
ient.py", line 269, in __init__
pymongo.errors.ConnectionFailure: Specified cast is not valid.
Code is pretty simple, I have replaced the db name.
import pymongo
c = pymongo.Connection('mongodb://testuser:test123#linus.mongohq.com:10021/sometestdb')
It works fine with regular python. Any ideas?

Answer 1

Ironpython isn't supported by pymongo - so I wouldn't advise trying to use it. You can see on the pypi page a list of supported implementations: http://pypi.python.org/pypi/pymongo

Answer 2

Please also see the answer here: Working with PTVS, IronPython and MongoDB
You may not be able to use pymongo with IronPython, but you can use the C#/.NET driver for MongoDB from IronPython.
Information on the driver is here. As explained in this link, you can install with nuget (PM> Install-Package mongocsharpdriver), or just download the dlls.
Once installed, you can use the assemblies in the normal way in IronPython:
# Add reference to the Mongo C# driver
import clr
clr.AddReferenceToFileAndPath("MongoDB.Bson.dll")
clr.AddReferenceToFileAndPath("MongoDB.Driver.dll")
Then use according to the MongoDB C# Driver API, for example:
# Get the MongoDB database
from MongoDB.Driver import MongoClient
client = MongoClient("mongodb://localhost")
server = client.GetServer()
database = server.GetDatabase("test")
# Get a collection
collection = database.GetCollection("users")
# Add a document
from MongoDB.Bson import BsonDocument
user = BsonDocument({'first_name':'John', 'last_name':'Smith'})
collection.Insert(user)
See the the MongoDB C# Driver API for more information.