Python MongoDB Check if Collection Exists










Python MongoDB Check if Collection Exists



Previous: Python MongoDB Creating a Collection


Checking if a Collection Exists in MongoDB

In the previous articles, we have created our "firstdatabase" and added the collection "Programming Languages" to the database. To print all the collection names in our database we will use the list_collection_names() method of the Database class.

Remember to initialize the MongoDB before running the script below:

import pymongo
client = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = client["firstdatabase"]
mycol = mydb['Programming Languages']
print(mydb.list_collection_names())

col_name = 'Programming Languages'
if col_name in mydb.list_collection_names():
print(True)
else:
print(False)

Once we add some data to our collection "Programming Languages", we will be able to see the name of the collection in the output. In the next article, we will insert "documents" i.e. records in our collection.

Next: Python MongoDB Insert Into Collection


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