Learn to Code. Shape Your Future
A Python decorator is a feature (or design pattern) that allows to enhance the logic of functions, methods or classes without changing the original code. To represent a decorator in Python you can use the @ symbol followed by the name of the decorator. In this tutorial, we will go through 7 things you must … Read more
It’s very common to copy a list in your Python programs. But, what should you absolutely know about copying lists? How to copy a Python list? Python provides multiple ways to copy a list depending on what your program needs to do with the existing list. You can use the assignment operator, the list copy … Read more
Knowing how to check if a Python string contains a substring is a very common thing we do in our programs. In how many ways can you do this check? Python provides multiple ways to check if a string contains a substring. Some ways are: the in operator, the index method, the find method, the … Read more
At some point every Linux user has to modify a file and what better editor to do it than vim, its commands allow you to do pretty much anything you want. What is Vim in Linux? Vim (that stands for Vi iMproved) is the main text editor available on the Linux Command Line Interface (CLI) … Read more
The Python assert statement is one of the tools that as a Python developer is available to you to make your programs more robust. What is the Python assert statement? The assert statement allows to verify that the state of a Python program is the one expected by a developer. Expressions verified by assert should … Read more
Knowing how to create an abstract class in Python is a must-know for Python developers. In this guide, you will learn how to define and use abstract classes. But first of all, what is an abstract class? An Abstract class is a template that enforces a common interface and forces classes that inherit from it … Read more
When you create a Python application there is one thing that can make your life a lot easier: class inheritance. Let’s learn how to use it. Class Inheritance allows to create classes based on other classes with the aim of reusing Python code that has already been implemented instead of having to reimplement similar code. … Read more
I know how to write scripts in Python and now I want to learn object-oriented Python. How can I create my first Python class? Creating a Python class means writing code that allows you to put together the data and behaviors that best describe a specific concept or entity. The data in a class is … Read more
Knowing how to replace a string in a file helps if you want to create Bash scripts to automate the configuration of systems or applications. To replace a string in a file using a Bash script you can use the sed command. The sed command allows to perform text manipulation and it can be called … Read more
One of the basic things required in Bash is detecting the number of arguments passed to a script. The reason behind that is being able to modify the behaviour of your script depending on the value and on the number of arguments passed to it. How do you find the number of arguments in Bash? … Read more