Do you encounter the following error message? TypeError: NoneType is not subscriptable You’re not alone! This short tutorial will show you why this error occurs, how to fix it, and how to never make the same mistake again. So, let’s get started! Summary Python raises the TypeError: NoneType is not subscriptable if you try to … Read more
Problem Formulation Say, you’re me 👱♂️ five minutes ago, and you want to create a Matplotlib plot using the following (genius) code snippet: If you run this code, instead of the desired plot, you get the following TypeError: ‘AxesSubplot’ object is not subscriptable: 💬 Question: How to resolve the TypeError: ‘AxesSubplot’ object is not subscriptable … Read more
With this article, we are starting a journey of going through smart contract examples in Solidity. We’ll first lay out the entire smart contract example without the comments for readability purposes. Then we’ll dissect it part by part, analyze it and explain it. Following this path, we’ll get a hands-on experience with smart contracts, as … Read more
Best Solution to Print List Without Newline To print all values of a Python list without the trailing newline character or line break, pass the end=” argument in your print() function call. Python will then avoid adding a newline character after the printed output. For example, the expression print(*[1, 2, 3], end=”) will print without … Read more
Problem Formulation and Solution Overview This article will show you how to use the Pillow Library in Python to modify and manipulate images. To make it more interesting, we have the following running scenario: Creative Prints is an online store accepting images from Photographers wishing to sell their art. The Manager would like you to … Read more
The idea of BitcoinVows.com is to create an immortal message, i.e., a “vow”, promise, love message, dedication, or just a simple note to your (future) kids that shall outlast civilizations. Bitcoiners believe that the Bitcoin Blockchain will exist for hundreds of years. 💡 The last Bitcoin will be mined in the year 2140. So, the … Read more
Problem 💬 Challenge: How to convert a Parquet file ‘my_file.parquet’ to a CSV file ‘my_file.csv’ in Python? In case you don’t know what a Parquet file is, here’s the definition: 💡 Info: Apache Parquet is an open-source, column-oriented data file format designed for efficient data storage and retrieval using data compression and encoding schemes to … Read more
(Reading time: 19 minutes) The purpose of this article is to help you refresh your knowledge of all the basic Python keywords, data structures, and fundamentals. I wrote it for the intermediate Python programmer who wants to reach the next level of programming expertise. The way of achieving an expert level is through studying the … Read more
Problem Given the following Markdown table stored in ‘my_file.md’: 🐍 Python Challenge: How to convert the Markdown table to a CSV file ‘my_file.csv’? Solution To convert a Markdown table .md file to a CSV file in Python, first read the Markdown table file by using the f.readlines() method on the opened file object f, by … Read more
Problem Formulation and Solution Overview This article will show you how to suppress warning messages in Python scripts. Warning messages in Python are commonly used to notify the coder of a potential issue with their script. Warnings can inform the coder about any outdated or obsolete elements. An example would be if a plugin or … Read more
In a previous post, I explained how AlphaZero can play Connect Four. If you haven’t already, you can read the first part here. In this part 2, I will share how to write the code for the Monte Carlo Tree Search to play Connect Four below. First, we will import our libraries and define our … Read more
In this final, concluding part on installing the Solidity compiler, we’ll be going through two more approaches, the static binary / precompiled Solidity Compiler installation, and Linux packages installation. We will follow the outlined steps for these two fairly simple and quick approaches, and after that, make an overview of all the approaches we made … Read more