Python MongoDB Create Collection

The MongoDB collection is the same as the SQL database table.

Use the database object and indicate the name of the collection that you wish to construct to create a MongoDB collection.

If the collection doesn't exist, automatically MongoDB creates the collection.

Example :- Create a collection called "emp" :

import pymongo
myclient = pymongo.MongoClient('mongodb://localhost:27017/')
mydb = myclient['mydatabase']
mycol = mydb["emp"]
print("Collection created!")

Output :-

Important: A collection is not generated in MongoDB until it gets a document!

MongoDB waits until you insert a document before the collection is truly created.

You should create a document before you check that a collection exists.

If this is your first time creating a collection then the name of collection will not be displayed until it get atleast a document in it.

The list_collection_names() method is used to return all available collection names from mongodb, which contains atleast one document.

Example :- Return all collection names from "mydatabase" :

import pymongo
myclient = pymongo.MongoClient('mongodb://localhost:27017/')
mydb = myclient['mydatabase']
mycol = mydb["emp"]
print(mydb.list_collection_names())

Output :-

Note:- In our case, We have added few documents on it.

By utilising the drop() method, you can remove a table or collection as it is called in MongoDB.

Example :- Delete the "emp" collection :

import pymongo
myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["emp"]
mycol.drop()
print("Collection deleted")

Output :-