Python tutorials

Getting the First Match From a Python List or Iterable

At some point in your Python journey, you may need to find the first item that matches a certain criterion in a Python iterable, such as a list or dictionary. The simplest case is that you need to confirm that a particular item exists in the iterable. For example, you want to find a name in a list of names or a substring inside a string. In these cases, you’re best off using the in operator. However, there are many […]

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Choosing the Best Coding Font for Programming

When you’re coding, there’s always a font involved in displaying the text on the screen. Yet, the font that you use is an often-overlooked piece in your programming tool kit. Many operating systems and code editors come with their default monospace fonts that you may end up using. But there are a bunch of technicalities and features to take into consideration when choosing the best font for your daily programming. That’s why it’s worth investigating the requirements that a programming […]

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Choosing a good file format for Pandas

Before you can process your data with Pandas, you need to load it (from disk or remote storage). There are plenty of data formats supported by Pandas, from CSV, to JSON, to Parquet, and many others as well. Which should you use? You don’t want loading the data to be slow, or use lots of memory: that’s pure overhead. Ideally you’d want a file format that’s fast, efficient, small, and broadly supported. You also want to make sure the loaded […]

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Python’s .__call__() Method: Creating Callable Instances

In Python, a callable is any object that you can call using a pair of parentheses and, optionally, a series of arguments. Functions, classes, and methods are all common examples of callables in Python. Besides these, you can also create custom classes that produce callable instances. To do this, you can add the .__call__() special method to your class. Instances of a class with a .__call__() method behave like functions, providing a flexible and handy way to add functionality to […]

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Using k-Nearest Neighbors (kNN) in Python

In this video course, you’ll get a thorough introduction to the k-Nearest Neighbors (kNN) algorithm in Python. The kNN algorithm is one of the most famous machine learning algorithms and an absolute must-have in your machine learning toolbox. Python is the go-to programming language for machine learning, so what better way to discover kNN than with Python’s famous packages NumPy and scikit-learn! You’ll explore the kNN algorithm both in theory and in practice. It’s important to learn about the mechanics […]

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How to Launch an HTTP Server in One Line of Python Code

Traditionally, if you wanted to handle HTTP requests and serve static content from files, then you had to set up a full-fledged web server like Apache or NGINX, which could be a tedious process. Building a dynamic web application requires installing a web framework, such as Django, Flask, or FastAPI, which adds yet another complexity layer. Fortunately, you can take advantage of a basic HTTP server built into Python to avoid all this hassle. Python’s HTTP server can come in […]

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