Python MongoDB - Insert Document

In this article, we will try to see how we can insert documents into MongoDB using python.

You can store documents into MongoDB using the insert() method. This method accepts a JSON document as a parameter.

Syntax

Following is the syntax of the insert method.

>db.COLLECTION_NAME.insert(DOCUMENT_NAME)

Example

> use mydb
switched to db mydb
> db.createCollection("sample")
{ "ok" : 1 }
> doc1 = {"name": "Ram", "age": "26", "city": "Hyderabad"}
{ "name" : "Ram", "age" : "26", "city" : "Hyderabad" }
> db.sample.insert(doc1)
WriteResult({ "nInserted" : 1 })
>

Similarly, you can also insert multiple documents using the insert() method.

> use testDB
switched to db testDB
> db.createCollection("sample")
{ "ok" : 1 }
> data = [
   {"_id": "1001", "name": "Ram", "age": "26", "city": "Hyderabad"}, 
   {"_id": "1002", "name" : "Rahim", "age" : 27, "city" : "Bangalore" }, 
   {"_id": "1003", "name" : "Robert", "age" : 28, "city" : "Mumbai" }
]
[
   {"_id" : "1001", "name" : "Ram", "age" : "26", "city" : "Hyderabad"},
   {"_id" : "1002", "name" : "Rahim", "age" : 27, "city" : "Bangalore"},
   {"_id" : "1003", "name" : "Robert", "age" : 28, "city" : "Mumbai"}
]
> db.sample.insert(data)
BulkWriteResult({
   "writeErrors" : [ ],
   "writeConcernErrors" : [ ],
   "nInserted" : 3,
   "nUpserted" : 0,
   "nMatched" : 0,
   "nModified" : 0,
   "nRemoved" : 0,
   "upserted" : [ ]
})
>

Creating a Collection Using Python

Pymongo provides a method named insert_one() to insert a document in MangoDB. To this method, we need to pass the document in dictionary format.

Example

Following example inserts a document in the collection named example.

from pymongo import MongoClient

#Creating a pymongo client
client = MongoClient('localhost', 27017)

#Getting the database instance
db = client['mydb']

#Creating a collection
coll = db['example']

#Inserting document into a collection
doc1 = {"name": "Ram", "age": "26", "city": "Hyderabad"}
coll.insert_one(doc1)
print(coll.find_one())

Output:

{'_id': ObjectId('5d63ad6ce043e2a93885858b'), 'name': 'Ram', 'age': '26', 'city': 'Hyderabad'}

To insert multiple documents into MongoDB using pymongo, you need to invoke the insert_many() method.

from pymongo import MongoClient

#Creating a pymongo client
client = MongoClient('localhost', 27017)

#Getting the database instance
db = client['mydb']

#Creating a collection
coll = db['example']

#Inserting document into a collection
data = [
   {"_id": "101", "name": "Ram", "age": "26", "city": "Hyderabad"},
   {"_id": "102", "name": "Rahim", "age": "27", "city": "Bangalore"},
   {"_id": "103", "name": "Robert", "age": "28", "city": "Mumbai"}
]
res = coll.insert_many(data)
print("Data inserted ......")
print(res.inserted_ids)

Output:

Data inserted ......
['101', '102', '103']

I hope you enjoyed reading this article and finally, you came to know about Python MongoDB - Insert Document.

For more such blogs/courses on data science, machine learning, artificial intelligence, and emerging new technologies do visit us at InsideAIML.

Thanks for reading…

Happy Learning…