A couple of years ago, I fell into the habit of creating cheat sheets when exploring certain areas in the programming space. Over time, hundreds of thousands of Finxters have downloaded and used them in their own learning journeys. However, the cheat sheets are largely scattered around many different locations on the Finxter ecosystem. And … Read more
Problem Formulation Given a string s. How to find the substring s’ between an opening and a closing parentheses? Consider the following examples: Input: ‘Learn Python (not C++)’ Output: ‘not C++’ Input: ‘function(a, b, c, d)’ Output: ‘a, b, c, d’ Input: ‘(a+(b+c))’ Output: ‘a+(b+c)’ Method 1: Slicing and str.find() The simplest way to extract … Read more
In this tutorial you will learn how to implement a simple Python program to detect if a linked list consists of a cycle or not. If you need a brief refresher on linked lists, do check out this blog post. Definition of a Cycle in a Linked List A linked list can consist of a … Read more
The set data structure is one of the most underused primary data structures in Python. I’ve seen so many intermediate-level coders who use lists when all they need is a data structure that checks membership!! ? Understanding the basics differentiates the good from the great. In this tutorial, you’ll learn about Python’s basic set methods. First, … Read more
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
A common problem people often run up against in Python is understanding a method to sort one list based on the values in another. There are many solutions to this but I will select three main methods, one of which uses well-understood Python built-in functions such as zip() and sorted(). One will use the dictionary … Read more
This article is a collection of useful machine learning cheat sheets focusing on the Python libraries such as Theano, Keras, TensorFlow, PyTorch, NetworkX, and other ML-related Python libraries. You may want to check out these great resources that cover many of these topics at once: https://becominghuman.ai/cheat-sheets-for-ai-neural-networks-machine-learning-deep-learning-big-data-science-pdf-f22dc900d2d7 https://gto76.github.io/python-cheatsheet/ https://www.pythonsheets.com/ Theano Cheat Sheets Theano is a Library … Read more
Hey Finxters! Have you ever felt surrounded by developers boasting from their latest app in prod hosted in the cloud? Or the need for making yours too but overwhelmed by the technicalities involved? Needed to set up quickly and easily a mini data science demo website without resorting to web developers? Or simply wanting to … Read more
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
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
? 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
Are you confronted with a JSON file and at a loss to know how to extract wanted information, or you don’t know about JSON but would like to? Today we’ll introduce the JSON format and use Python to access a JSON file. We’ll extract the data we need and we’ll use the Python JSON module … Read more