Chris

While working as a researcher in distributed systems, Dr. Christian Mayer found his love for teaching computer science students.To help students reach higher levels of Python success, he founded the programming education website Finxter.com that has taught exponential skills to millions of coders worldwide. He's the author of the best-selling programming books Python One-Liners (NoStarch 2020), The Art of Clean Code (NoStarch 2022), and The Book of Dash (NoStarch 2022). Chris also coauthored the Coffee Break Python series of self-published books. He's a computer science enthusiast, freelancer, and owner of one of the top 10 largest Python blogs worldwide.His passions are writing, reading, and coding. But his greatest passion is to serve aspiring coders through Finxter and help them to boost their skills. You can join his free email academy here.

A Simple Example of Python Objects and Classes [+Video]

by

In Python, everything is an object. Even integers are objects — this is different from programming languages like Java where integers, floats, and Booleans are primitive data types. In this way, Python is built on a rigorously consistent object-oriented paradigm. Considering that objects are everywhere in Python, object-oriented programming is not well studied by Python … Read more

Python Set symmetric_difference()

by

Python’s S.symmetric_difference(T) method creates and returns a new set containing all elements that are in exactly one of the two sets S and T. Here’s a minimal example where we return a new set containing the elements 1 and 4 that are in exactly one of the two sets s and t. Here’s another visual … Read more

Static and Dynamic Attributes in Python – What’s the Difference?

by

Quick Answer: Static attributes are variables defined once for the class and shared by all instances. Dynamic attributes are variables defined for individual instances only. Static variables are used as a “fall-back” when there are no explicit dynamic attributes defined for the instances. When you try to “overwrite” a static attribute such as in x.attr … Read more

Python Linear Regression with sklearn – A Helpful Illustrated Guide

by
Machine Learning Linear Regression Python

? This tutorial will show you the most simple and straightforward way to implement linear regression in Python—by using scikit-learn’s linear regression functionality. I have written this tutorial as part of my book Python One-Liners where I present how expert coders accomplish a lot in a little bit of code. Feel free to bookmark and download … Read more

Python Set remove()

by

Python’s set.remove(x) method removes an element x from this set if it is a member, otherwise it raises a KeyError. Here’s a minimal example where you remove the string element ‘Bob’ from the set by means of the s.remove() method: Syntax Let’s dive into the formal syntax of the set.remove() method. set.remove(element) Argument Data Type … Read more

NumPy Diff Simply Explained [Tutorial + Video]

by

NumPy’s np.diff() function calculates the difference between subsequent values in a NumPy array. For example, np.diff([1, 2, 4]) returns the difference array [1 2]. Here is a simple example to calculate the Fibonacci number differences: This code snippet shows the most simple form of the np.diff() method: how to use it on a one-dimensional NumPy … Read more

The Reduce Function in Python 3: Simply Explained

by

? The reduce() function from Python’s functools module aggregates an iterable to a single element. It repeatedly merges two iterable elements into a single one as defined in the function argument. By repeating this, only a single element will remain — the return value. Minimal Example Here’s the minimal example: The code performs the following steps: … Read more

101+ Free Python Books

by
Free Python Book

Books remain great learning devices — even in the age of AI. But why spending money when you can get them for free? This article compiles a list of 101++ FREE Python books to destroy any excuse of not learning Python. Everyone can afford to read free books! Also check out my two other free … Read more

Python Set clear()

by

Python’s set.clear() method removes all elements from this set. All variables that refer to this set object will refer to an empty set after calling the method. Here’s a minimal example where you remove three elements from a set at once by means of the s.clear() method: Syntax Let’s “dive” into the formal syntax of … Read more

Python Set copy()

by

Python’s set.copy() method creates and returns a flat copy of this set. Here’s a minimal example where you copy a set with two integers and a string value: Syntax Let’s dive into the formal syntax of the set.copy() method. set.copy() Argument Data Type Explanation – – – The set.copy() method doesn’t take any argument. If … Read more