Recently, I have been working on a project of mine and I was stuck at login system’s logic for a while. It was working just fine but I only could authenticate with a username and password. You may be well aware by now that most web applications allows you to authenticate with an email and password and that is what I wanted to do. However, doing authentication by yourself is not that I would recommend. If you are just starting with web development just stick to your framework’s login system and you will be fine. But since I wanted some…
When I started my journey as a software engineer I was fascinated by the syntax of programming languages and most of the time I was asking what in the world that function do and how does it do it. The one that really grab my attention was python decorators. It looks elegant, simple and yet does so much for you — kind of like magic. You’ve got your function you want to decorate, you throw a @ sign before it and it works! Indeed magic!
“Programming is the closest thing we have to magic”, Jenni Luckett
If you are reading…
In our previous article I have started and shown you the server side of our messaging app. As I previous state in this article we will go over the client side of the app and will make several tests to better understand how all works together. Let’s got started right away.
The client side, as you probably have guessed it is build in a similar fashion to server side — each process works in a separate thread. That is because we have two separate processes that we have to handle for that receives messages and one that sends messaging.
An…
Recently, I have started building a messaging application which is work in progress but I wanted to share it. Before I ever started I wondered what type of messaging application do I want — a command line interface, a GUI (Graphical user interface), a web app, the choices are a lot. Since I am a more of a backend type of guy and live and breathe on the CLI, I figured I would start with simple command line interface application and later on I might migrate it to GUI one.
The next thing that I asked myself was what language…
Our data structure exploration continues with yet another data structure — Graphs. Graphs are unique data structure as we shall see from this article that helps solving quite a lot of problems in our day to day jobs. The first thing that it comes to mind is the famous Dijkstra’s algorithm.
To put it into prospective, my technical background revolves around computer networks and telecommunications and the first time I have ever encountered a graph in real life, besides my professor lectures at the university, was when I started working as a network engineer. …
Our journey of exploring python data structures continue with yet another interesting data structure and probably you have guest it from the title — that is Heaps. But what exactly is a Heap you may ask? In this article we are going to cover the basics of Heaps and we will make a Python implementation of a Min Heap. The code is portable enough, so it should be no problem to take it as a home assignment.
Introduction
Heaps are special case of a binary trees (Part 1 & 2), which is an almost complete binary tree where any given node…
Part 2
In our previous article we have took a look over what binary trees are, their structure and real life usage. We have also started a Python implementation of a binary tree and defined several methods for adding nodes to our tree, finding minimum and maximum nodes, as well as the left and right height of the tree. In this article we are going to implement the rest of the Tree class’s functions which are a search, remove and a print methods. As a bonus I will add and a method that inverts the binary three. Let’s dive in.
Firstly, we…
Part 1
Exploring Python data structures series continues with another article covering binary trees. In our previous articles we have covered linked lists (Part 1 & Part 2), stack and queues. In this article we are going to take a closer look at binary trees, their usage and properties. In Part One we will be starting a Python implementation of binary tree which we will finish in Part Two of these series. The article is structured as follows.
- Introduction
- Binary trees in real life
- Structure of binary tree
- A Python implementation of binary tree
- Conclusion
1. IntroductionA Python implementation of binary tree
A binary tree is a data structure…
Exploring Python data structures series (if you are interested in other data structures you can check them out — linked lists (part 1 & part 2) and stacks) continues with yet another abstract data type. Yes, we are talking about queues.
Python queues or any programming language’s queue is no different from a real life queue at the store. Imagine you are waiting for your favorite coffee at the local coffee shop. Everyone is in line and waiting for the barista while he is preparing your cup of joy. How is the queue structured? Who gets served first, who gets…
In our previous articles we have took a look at what Linked Lists (part 1 and part 2) are and how we can build them by using Python. In this article we are going to learn what Stacks are, where they are used and build a Python implementation for them. The article is structured as follows.
- Introduction
- Where are stack used in real-life
- Building a stack data structure in Python
- Testing
- Wrapping up
1. Introduction to Stacks
What exactly are stacks. A stack is a data structures that is often linked to a pile of plates. Why you may ask? Well, imagine you are…
Jordan P. Raychev
Network, system and software engineer with true passion about technology. Love to read and spend time in nature.
