MongoDB is a cross-platform document-oriented and a non relational (i.e NoSQL) database program. It is an open-source document database, that stores the data in the form of key-value pairs. MongoDB is developed by MongoDB Inc. and initially released on 11 February 2009. It is written in C++, Go, JavaScript, Python languages. MongoDB offers high speed, high availability, and high scalability.
insert_one()
This is a method by which we can insert a single entry within the collection or the database in MongoDB. If the collection does not exist this method creates a new collection and insert the data into it. It takes dictionary as a parameter containing the name and value of each field in the document you want to insert in the collection.
This method returns an instance of class “~pymongo.results.InsertOneResult” which has a “_id” field that holds the id of the inserted document. If the document does not specify an “_id” field, then MongoDB will add the “_id” field and assign a unique object id for the document before inserting.
Syntax: collection.insert_one(document, bypass_document_validation=False, session=None)
Parameters:
- ‘document’: The document to insert. Must be a mutable mapping type. If the document does not have an _id field one will be added automatically.
- ‘bypass_document_validation’ (optional): If “True”, allows the write to opt-out of document level validation. Default is “False”.
- ‘session’ (optional): a class ‘~pymongo.client_session.ClientSession’.
Example 1:
Sample Database:
Python3
# importing Mongoclient from pymongo from pymongo import MongoClient # Making Connection # database db = myclient["GFG"] # Created or Switched to collection # names: GeeksForGeeks collection = db["Student"] # Creating Dictionary of records to be # inserted record = { "_id": 5, "name": "Raju", "Roll No": "1005", "Branch": "CSE"} # Inserting the record1 in the collection # by using collection.insert_one() rec_id1 = collection.insert_one(record) |
Output:
Example 2: Inserting multiple values
Python3
# importing Mongoclient from pymongo from pymongo import MongoClient # Making Connection # database db = myclient["GFG"] # Created or Switched to collection # names: GeeksForGeeks collection = db["Student"] # Creating Dictionary of records to be # inserted records = { "record1": { "_id": 6, "name": "Anshul", "Roll No": "1006", "Branch": "CSE"}, "record2": { "_id": 7, "name": "Abhinav", "Roll No": "1007", "Branch": "ME"} } # Inserting the records in the collection # by using collection.insert_one() for record in records.values(): collection.insert_one(record) |
Output:
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