Category: Python

Python tutorials

Python

OrderedDict vs dict in Python: The Right Tool for the Job

Sometimes you need a Python dictionary that remembers the order of its items. In the past, you had only one tool for solving this specific problem: Python’s OrderedDict. It’s a dictionary subclass specially designed to remember the order of items, which is defined by the insertion order of keys. This changed in Python 3.6. The built-in dict class now keeps its items ordered as well. Because of that, many in the Python community now wonder if OrderedDict is still useful. […]

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Python

How to Print Colored Text in Python

Introduction It’s typical for CLI apps to return text in the same color of the terminal. There are always cases when we want to highlight output to the user, for example, a warning or error message. In those cases, a dash of color could make a difference. This article shows you how to print colored output in the terminal in Python with and without libraries. ANSI Escape Sequences Your Teletypewriter (TTY), or rather your terminal, is not only capable of […]

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Parse Datetime Strings with parsedatetime in Python

Introduction In this tutorial, we’ll take a look at how to parse Datetime with parsedatetime in Python. To use the parsedatetime package we first need to install it using pip: $ pip install parsedatetime Should pip install parsedatetime fail, the package is also opensource available on Github. Convert String to Python’s Datetime Object with parsedatetime The first, and most common way to use parsedatetime is to parse a string into a datetime object. First, you’ll want to import the parsedatetime […]

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Python

Python Community Interview With Dane Hillard

Today I’m joined by Dane Hillard, lead web application developer at ITHAKA and author of Practices of the Python Pro. Dane is also a Real Python tutorial author. In this interview, we discuss a variety of topics, including code complexity, Python package maintenance, and popcorn. So without further ado, let’s welcome Dane. Ricky: Thanks for joining me for this interview, Dane. I’d like to start in the same manner we do with all our guests: how did you get into programming, […]

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Python

Records and Sets: Selecting the Ideal Data Structure

There are a variety of ways for storing and managing data in your program and the choice of the right data structure has an effect on the readability of your code, ease of writing, and performance. Python has a wide selection of built-in mechanisms that meet most of your data structure needs. This course introduces you to two types of data structures: data records and sets. There are multiple types and classes for both of these data structures and this […]

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Python

Build an Asteroids Game With Python and Pygame

Do you want to create your own computer games but like Python too much to abandon it for a career as a game developer? There’s a solution for that! With the Pygame module, you can use your amazing Python skills to create games, from the basic to the very complex. Below, you’ll learn how to use Pygame by making a clone of the Asteroids game! In this tutorial, you’ll learn how to build a complete game, including: Loading images and […]

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Python

Matplotlib: Draw Vertical Lines on Plot

Introduction Matplotlib is one of the most widely used data visualization libraries in Python. Much of Matplotlib’s popularity comes from its customization options – you can tweak just about any element from its hierarchy of objects. In this tutorial, we’ll take a look at how to draw a vertical line on a Matplotlib plot, that allows us to mark and highlight certain regions of the plot, without zooming or changing the axis range. Creating a Plot Let’s first create a […]

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Validating and Formatting Phone Numbers in Python with phonenumbers

Introduction Validating phone numbers can be a very challenging task. The format of a phone number can vary from one country to another. Heck, it can also vary within the same country! Some countries share the same country code, while some other countries use more than one country code. According to an example from the Google’s libphonenumber GitHub repository, USA, Canada, and Caribbean islands, all share the same country code (+1). On the other hand, it is possible to call […]

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Python

Python AI: How to Build a Neural Network & Make Predictions

If you’re just starting out in the artificial intelligence (AI) world, then Python is a great language to learn since most of the tools are built using it. Deep learning is a technique used to make predictions using data, and it heavily relies on neural networks. Today, you’ll learn how to build a neural network from scratch. In a production setting, you would use a deep learning framework like TensorFlow or PyTorch instead of building your own neural network. That […]

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