How to connect mongoDB with python?

Question

I'm calling function with argument value database name. When I print argument other function it's working properly but when i'm connecting this argument value with database it's not giving any output

My code is Here.

def myFunction(mydb):
    from pymongo import MongoClient
    print(mydb)
    client = MongoClient('localhost:27017')
    db = client.mydb
    data = db.collection.find().count()
    return data

mydb = 'my_databaseName'
myFunction(mydb);

when I work with the above code it's returning:

Oputput:0

But when I'm working with this code it's working properly

 def myFunction(mydb):
        from pymongo import MongoClient
        print(mydb)
        client = MongoClient('localhost:27017')
        db = client.my_databaseName #its static database name
        data = db.collection.find().count()
        return data

So how can I solve this problem?

yes, collection is existing in my database.

Kaushik Makwana
– Kaushik Makwana

2016-02-02 12:02:30 +00:00
Commented Feb 2, 2016 at 12:02 — Kaushik Makwana
– Kaushik Makwana, Commented Feb 2, 2016 at 12:02

Burhan Khalid · Accepted Answer · 2016-02-02 11:58:58Z

2

You need to fetch the database directly, as its passed into your method:

from pymongo import MongoClient
client = MongoClient('localhost:27017')

def my_function(mydb):
    db = client.get_database(mydb)
    return db.collection.find().count()

print(my_function('my_database'))

answered Feb 2, 2016 at 11:58

Burhan Khalid

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user1464878 · Accepted Answer · 2018-11-18 06:10:54Z

0

https://github.com/mak705/Python_Mongo_Basics/blob/master/Python_Mongo_Basics.ipynb

import pymongo
myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]

dblist = myclient.list_database_names()
if "mydatabase" in dblist:
  print("The database exists.")

#Create a collection called "customers":
mycol = mydb["customers"]
print(mydb.list_collection_names())

answered Nov 18, 2018 at 6:10

user1464878

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