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Commitfb50388

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added mongodb tutorial
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‎README.md

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@@ -104,5 +104,6 @@ This is a repository of all the tutorials of [The Python Code](https://www.thepy
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-###Database
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-[How to Use MySQL Database in Python](https://www.thepythoncode.com/article/using-mysql-database-in-python). ([code](database/mysql-connector))
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-[How to Connect to a Remote MySQL Database in Python](https://www.thepythoncode.com/article/connect-to-a-remote-mysql-server-in-python). ([code](database/connect-to-remote-mysql-server))
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-[How to Use MongoDB Database in Python](https://www.thepythoncode.com/article/introduction-to-mongodb-in-python). ([code](database/mongodb-client))
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‎database/mongodb-client/README.md

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#[How to Use MongoDB Database in Python](https://www.thepythoncode.com/article/introduction-to-mongodb-in-python)

‎database/mongodb-client/mongodb.py

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frompymongoimportMongoClient
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frompprintimportpprint
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# connect to the MongoDB server
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client=MongoClient()
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# or explicitly
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# client = MongoClient("localhost", 27017)
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# list all database names
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print("Available databases:",client.list_database_names())
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# access the database "python", this will create the actual database
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# if it doesn't exist
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database=client["python"]
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# or this:
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# database = client.python
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# list all collections
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print("Available collections:",database.list_collection_names())
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# get books collection (or create one)
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books=database["books"]
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# insert a single book
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result=books.insert_one({
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"name":"Invent Your Own Computer Games with Python, 4E",
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"author":"Al Sweigart",
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"price":17.99,
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"url":"https://amzn.to/2zxN2W2"
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})
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print("One book inserted:",result.inserted_id)
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# insert many books
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books_data= [
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{
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"name":"Automate the Boring Stuff with Python: Practical Programming for Total Beginners",
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"author":"Al Sweigart",
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"price":17.76,
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"url":"https://amzn.to/2YAncdY"
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},
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{
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"name":"Python Crash Course: A Hands-On, Project-Based Introduction to Programming",
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"author":"Eric Matthes",
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"price":22.97,
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"url":"https://amzn.to/2yQfQZl"
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},
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{
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"name":"MySQL for Python",
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"author":"Albert Lukaszewski",
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"price":49.99,
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}
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]
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result=books.insert_many(books_data)
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print("Many books inserted, Ids:",result.inserted_ids)
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# get a single book by a specific author
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eric_book=books.find_one({"author":"Eric Matthes"})
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pprint(eric_book)
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# get all books by a specific author
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sweigart_books=books.find({"author":"Al Sweigart"})
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print("Al Sweigart's books:")
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pprint(list(sweigart_books))
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# get all documents in books collection
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all_books=books.find({})
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print("All books:")
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pprint(list(all_books))
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# delete a specific document by a JSON query
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result=books.delete_one({"author":"Albert Lukaszewski"})
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# delete all books by Al Sweigart
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result=books.delete_many({"author":"Al Sweigart"})
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# printing all documents
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all_books=books.find({})
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print("All books:")
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pprint(list(all_books))
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# drop this collection
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database.drop_collection("books")
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# or this:
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# books.drop()
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# drop this entire database
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client.drop_database("python")
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# close the connection
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client.close()
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pymongo

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