One Hot Encoding One hot encoding, consists in encoding each categorical variable with different boolean variables (also called dummy variables) which take values 0 or 1, indicating if a category is present in an observation. For example, for the categorical variable “Gender”, with labels ‘female’ and ‘male’, we can generate…

Here is a full tutorial on how to implement JSON Web Tokens (JWT) in a Flask application using the Flask-JWT-Extended library: Install the necessary packages: pip install flask-jwt-extended 2. Import the necessary modules into your Flask application: from flask import Flask, request, jsonify from flask_jwt_extended import JWTManager, jwt_required, create_access_token, get_jwt_identity …

MongoDB is a popular NoSQL database that can be used with Python. To get started with MongoDB and Python, you will need to have MongoDB installed and running on your machine. Here is a tutorial that covers the basics of how to use MongoDB with Python: Install the pymongo library…

The os library in Python provides a way for developers to interact with the operating system. This library contains a wide variety of functionality, including the ability to interact with the file system, execute shell commands, and interact with environment variables. …

In SQL, a constraint is a rule that defines the acceptable values for a column in a table. Constraints can be used to enforce data integrity and ensure that only valid data is entered into the database. …

Collections in Python are containers used for storing data and are commonly known as data structures, such as lists, tuples, arrays, dictionaries, etc. Python has a built-in collections module providing additional data structures for collections of data. Here is a list of some of the classes provided by the collections module: Counter: A Counter is a dict subclass for counting hashable objects. It is…

Here are some basic Linux commands that every software engineer should know: cd - Change the current working directory ls - List the files and directories in the current working directory pwd - Print the current working directory mkdir - Create a new directory rmdir - Remove an empty directory …

There are several ways to work with large CSV files in Python, depending on your needs and the resources available to you. Here are a few options: Use a generator: You can use a generator to read the file one line at a time, rather than reading the entire file…

To work with JSON data in Python, you can use the json module. This module provides functions for working with JSON in Python. Here is an example of how to parse a JSON string in Python: import json # Some JSON data json_data = '{"name": "John", "age": 30, "city": "New York"}' # Parse…