In this article, we are implementing a simple but extremely useful project in Python — a bot for Telegram. Bots are small scripts that can interact with the API to receive messages from the user and send information to different chats and channels.

Today, we will work with the OS file system — we will learn how to navigate through directories, open and change files. Then, we’ll master the powerful spells called “regular expressions,” learn the intricacies of creating and calling functions, and finally write a simple SQL vulnerability scanner. And all this in one short lesson!

One day, Crocodile Gena and Cheburashka were asked to write an essay on the topic ’How I spent my summer.’ The problem was that the friends drank beer all summer. Gena, who can’t lie, wrote it that way, so Cheburashka had to replace some words. And since Cheburashka was a Python coder, he did this using a string function. In this article, I’ll show you how to keep up with Cheburashka and learn how to work with strings, files, and make requests to websites in Python.

If you think a hacker doesn’t need programming, you’re deeply mistaken! Yes, you can rock Kali Linux and use premade programs, copy code from forums, and blindly download scripts from GitHub. But your skill limit until you learn to write and understand code will be low. In this article, I will try to teach you the basics of programming in an accessible form. Starting from zero!