Python MongoDB – insert_one Query
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)
- ‘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 2: Inserting multiple values
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