CODEWITHSUNDEEP
pythonmongodb
user3946530
user3946530

Reputation:

how to fetch Object id from mongodb

I want to fetch document from mongoDB using python i am able to fetch all attribute but i just wanted to fetch its object id and store it into a variable .

i am trying following code

from pymongo import Connection
from bson.objectid import ObjectId


connection = Connection()
server="localhost"
port = 27017

connection =Connection(server , port)

db = connection.flipkart

connection = db.flipitems

connection.remove({'name':None})

for post in connection.find():
    print post['_id':'ObjectId']
    seller_name = post['seller_name']
    name = post['name']

but it gives following error

shubham@shubham-pc:~/Desktop/python$ python fetch_data.py Traceback

(most recent call last): File "fetch_data.py", line 18, in 

print post['_id':'ObjectId'] TypeError: unhashable type

Upvotes: 3

Views: 1653

Answers (2)

Arun K
Arun K

Reputation: 252

You can simply use 

    print str(post['_id'])

This will give the ObjectId in string format

print post['_id'] will return the objectId as ObjectId('123456789023456') itself

Upvotes: 2

Assem
Assem

Reputation: 12077

You are wrong in post['_id':'ObjectId'], you should do either:

print post['_id']

or 

print post['ObjectId']

Upvotes: 0

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