PymonGo's steps and examples of the MongoDB database (Steps and Examples to Connect Mongodb DataBase USINGO)

PymonGo is the official driver used in Python to connect the MongoDB database.In this article, we will introduce the steps connecting the MongoDB database and the example code using PymonGo. To start using Pymono, you need to install it first.You can use the following command to install Pymono in the command line: pip install pymongo Step 2: Import pymongo module Introduce the PymonGo module in the Python script: python import pymongo Step 3: Connect MongoDB database Use the following code to connect the MongoDB database: python client = pymongo.MongoClient("mongodb://localhost:27017/") This will create a MongoDB database that is connected to the MongoDB client object named `Client`, which will be connected to the default host and LocalHost (LocalHost: 27017).If your MongoDB database is located on different hosts or ports, please change the connection string accordingly. Step 4: Select the database After connecting the MongoDB database, you can choose the database you want to use.Use the following code to select the database: python db = client["mydatabase"] This will create a database object called `db`, allowing us to perform various operations.Replace the `mydatabase` to the database name you want to use. Step 5: Execute the query and operation After connecting to the database, we can perform various inquiries and operations.The following are examples of some common operations: 1. Insert data: python collection = db["mycollection"] data = {"name": "John", "age": 25} collection.insert_one(data) This will insert a document called John and age 25 in the `MyCollection` Collection. 2. Query data: python collection = db["mycollection"] query = {"name": "John"} result = collection.find(query) for document in result: print(document) This will find a document called John from the `MyCollection` Collection and print it. 3. Update data: python collection = db["mycollection"] query = {"name": "John"} new_data = {"$set": {"age": 30}} collection.update_one(query, new_data) This will be updated at 30 documents called John. 4. Delete data: python collection = db["mycollection"] query = {"name": "John"} collection.delete_one(query) This will delete a document named John from the `MyCollection` Collection. Complete code example: python import pymongo # Mongodb database client = pymongo.MongoClient("mongodb://localhost:27017/") # Select the database db = client["mydatabase"] # Insert data collection = db["mycollection"] data = {"name": "John", "age": 25} collection.insert_one(data) # Query data query = {"name": "John"} result = collection.find(query) for document in result: print(document) # update data new_data = {"$set": {"age": 30}} collection.update_one(query, new_data) # delete data collection.delete_one(query) The above is the steps and examples of using the PyMongo to connect the MongoDB database.With Pymono, you can easily connect the MongoDB database and perform various operations.Remember to modify the connection string, database name, and collection name according to your actual situation.