Shulou(Shulou.com)06/03 Report--

This article mainly introduces "how to delete a document in python". In daily operation, I believe many people have doubts about how to delete a document in python. The editor consulted all kinds of materials and sorted out a simple and easy-to-use method of operation. I hope it will be helpful to answer the doubt of "how to delete a document in python"! Next, please follow the editor to study!

1. The delete_one () method deletes the document. Delete_one () requires a query object parameter. It only deletes the first appearance.

2. When deleting a large number of documents, you need to query objects by using the delete_many method.

If we pass e_many ({}) to delete_many ({}), it will delete all documents in the collection.

Example

# Let's import Flask import Flask from Flask Render_templateimport os # Import operating system module import pymongo MONGODB_URI = 'mongodb+srv://asabeneh:your_password_goes_here@30daysofpython-twxkr.mongodb.net/test?retryWrites=true&w=majority'client = pymongo.MongoClient (MONGODB_URI) db = client [' thirty_days_of_python'] # accessing the database query = {'name':'John'} db.students.delete_one (query) for student ind b.students.find (): print (student) # lets check The result if the age is modifiedfor student in db.students.find (): print (student) app = Flask (_ _ name__) if _ _ name__ = ='_ main__': # for deployment we use the environ # to make it work for both production and development port = int (os.environ.get ("PORT") 5000) app.run (debug=True, host='0.0.0.0', port=port) to this point The study on "how to delete a document in python" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.