Learn to Code. Shape Your Future
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
If you are either familiar with Python or if you are starting with it now, it’s likely that you have heard about the Python input function. The Python input built-in function allows to capture the input provided by a user during the execution of a program. The input function returns the input in string format … Read more
The Python error “too many values to unpack” occurs when you try to extract multiple values from a data structure into variables that don’t match the number of values. For example, if you try to unpack the elements of a list into variables that don’t match the number of elements in the list. We will … Read more
