Python

In this tutorial, you will learn how to download files from the web using different Python modules. You will download regular files, web pages, YouTube videos, Google drive files, Amazon S3, and other sources. Also, you will learn how to overcome many challenges that you may counter such as downloading files that redirects,  downloading large files, multithreaded download, and other ...

In this tutorial, the focus will be on one of the best frameworks for web crawling called Scrapy. You will learn the basics of Scrapy and how to create your first web crawler or spider. Furthermore, the tutorial gives a demonstration of extracting and storing the scraped data. Scrapy, a web framework written in Python that is used to crawl through ...

NumPy is a Python Library/ module which is used for scientific calculations in Python programming. In this tutorial, you will learn how to perform many operations on NumPy arrays such as adding, removing, sorting, and manipulating elements in many ways. NumPy provides a multidimensional array object and other derived arrays such as masked arrays or masked multidimensional arrays. Why using ...

Open Policy Agent[1] is a promising, light weight and very generic policy engine to govern authorization is any type of domain. I found this comparion[2] very attractive in evaluating OPA for a project I am currently working on, where they demonstrate how OPA can cater same functionality defined in RBAC, RBAC with Seperation of Duty, ABAC and XACML.   Here are ...

In this tutorial, we will learn how to draw vector graphics in PyQt5. In Python, the PyQt5 module is the easiest module you can use for drawing purposes as you will see. Before getting started, let’s create a window using PyQt5 where we will be drawing our graphics. Create a PyQt5 window To create the window, import the following modules: ...

In this tutorial, we will work with SQLite3 database programmatically using Python. SQLite in general, is a server-less database that can be used within almost all programming languages including Python. Server-less means there is no need to install a separate server to work with SQLite so you can connect directly with the database. SQLite is a lightweight database that can ...

In previous tutorials, you saw how to build GUI applications using Tkinter and PyQt5, in this tutorial, we will continue building desktop GUI applications but this time using Kivy. Kivy is an open source Python library which is used to create applications on Windows, Linux, MacOS, Android and iOS. You will learn how to play with the Kivy buttons, labels, ...

Operators refer to special symbols in Python that carry out arithmetic or logical computation. An operand is generally a variable or a value on which we operate. 1. Python Operators There different types of python operators and we will discuss some of them below. Python Arithmetic Operator Python Comparison Operator Python Logical Operator Python Identity Operator Python Bitwise Operator Python ...

Math can be intimidating. Depending on the teacher and how it is taught, it can be an infuriating combination of inscrutable and boring. But, there’s a beauty to math—a symmetry to the intelligence and logic behind numbers. I love math, and I want other people to love it too. One neat way to make math more approachable and show its beauty ...