The Fibonacci series was discovered by the Italian mathematician Leonardo Fibonacci in 1202 and even earlier by Indian mathematicians. The series appears in unexpected areas such as economics, mathematics, art, and nature. Algorithm Sketch In the following, we give a simple algorithm to calculate the Fibonacci numbers. The series starts with the Fibonacci numbers zero … Read more
The most pythonic way to convert a list of integers fs to a list of floats is to use the one-line fs = [float(x) for x in fs]. It iterates over all the elements in the list fs using list comprehension and converts each element of the list x to an integer value using the … Read more
If you learn Python with the excellent Sololearn app, you may find yourself with this code snippet: What’s the output of this code snippet? And, most importantly, how does it work? This short guide will tell you! The code creates a function that returns x^y. It leverages the important programming concept of recursion: it calls … Read more
This chapter draft is part of my upcoming book “The Art of Clean Code” (NoStarch 2022). You’ll learn about the concept of premature optimization and why it hurts your programming productivity. Premature optimization is one of the main problems of poorly written code. But what is it anyway? Definition Premature Optimization Definition: Premature optimization is … Read more
To count a regex pattern multiple times in a given string, use the method len(re.findall(pattern, string)) that returns the number of matching substrings or len([*re.finditer(pattern, text)]) that unpacks all matching substrings into a list and returns the length of it as well. A few hours ago, I wrote a regular expression in Python that matched … Read more
In this article, you’ll explore how to generate exponential fits by exploiting the curve_fit() function from the Scipy library. SciPy’s curve_fit() allows building custom fit functions with which we can describe data points that follow an exponential trend. In the first part of the article, the curve_fit() function is used to fit the exponential trend … Read more
Writing code in Python is not always an easy task. Often writing “perfect” code without any errors is nothing more than a coder’s daydream. Allow me to introduce you to a little function programmers use to debug their code called the breakpoint() function. Now there are several tools a programmer can use in their coding … Read more
This chapter from my upcoming book “The Art of Clean Code” (NoStarch 2022) teaches you a well-known but still undervalued idea. The idea is to build a minimum viable product (in short: MVP) to test and validate your hypotheses quickly without losing a lot of time in implementation. In particular, you’ll learn how to apply … Read more
The most Pythonic way to convert a list of floats fs to a list of integers is to use the one-liner fs = [int(x) for x in fs]. It iterates over all elements in the list fs using list comprehension and converts each list element x to an integer value using the int(x) constructor. This … Read more
Do you want to enrich your Python script with powerful text-generation capabilities? You’re in the right place! What does it do? I just discovered DeepAI’s API that automatically generates a body of text, given a sentence fragment or topic keyword. How can it be used? You can use this as a basis to generate text … Read more
Summary: The key goal of __str__ and __repr__ is to return a string representation of a Python object. The way they represent the string object differentiates them. str() & __str()__ return a printable/readable string representation of an object which is focused on the end-user. repr() & __repr()__ return a string representation of an object that is a valid Python object, something you can … Read more
This article is based on a book chapter from my upcoming book “From One to Zero: A Minimalistic Approach to Programming”. My programming students often write in with their struggles and failures. Many students ultimately overcome their struggles—but a large percentage of them give up their programming ambitions after realizing how hard creating software can … Read more