How to use variable to select database in Pymongo

Question

Usually I connect to a database in Pymongo like this:

    # connect to the MongoDB
    connection = MongoClient("mongodb://127.0.0.1:27017")

    # connect to the database
    self.db = self.connection.my_database

The problem is, the name of my_database always changes. How can I use a variable to choose the database?

Answer 1

Based on this documentation we can do it like this:

# connect to the MongoDB
connection = MongoClient("mongodb://127.0.0.1:27017")

# connect to the database
a = 'my_database'
self.db = self.connection[a]