This video shows 7 code smells that point to poor design decisions, as well as how to fix them. I'm pretty sure you're guilty of at least one of these smells (as I was in the past :) ), and knowing these will help you write much cleaner, more robust code. The code that I worked on in this video is available here: https://github.com/ArjanCodes/2021-code-smells. 💡 Here's my FREE 7-step guide to help you consistently design great software: https://arjancodes.com/designguide. 🎓 Courses: The Software Designer Mindset: https://www.arjancodes.com/mindset The Software Designer Mindset Team Packages: https://www.arjancodes.com/sas The Software Architect Mindset: Pre-register now! https://www.arjancodes.com/architect Next Level Python: Become a Python Expert: https://www.arjancodes.com/next-level-python The 30-Day Design Challenge: https://www.arjancodes.com/30ddc 🛒 GEAR & RECOMMENDED BOOKS: https://kit.co/arjancodes. A few interesting links to articles and books: Refactoring: Improving the Design of Existing Code (2nd Edition) by Martin Fowler - https://amzn.to/35N4Clq - Design Patterns: Elements of Reusable Object-Oriented Software by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides: https://amzn.to/3jllgyH - Principles of Package Design: Creating Reusable Software Components by Matthias Noback: https://amzn.to/2NETK3l - Clean Code: A Handbook of Agile Software Craftsmanship by Robert Martin: https://amzn.to/3qVZgNs 👍 If you enjoyed this content, give this video a like. If you want to watch more of my upcoming videos, consider subscribing to my channel! 💬 Join my Discord server here: https://discord.arjan.codes/ 🐦Twitter: https://twitter.com/arjancodes 🌍LinkedIn: https://www.linkedin.com/company/arjancodes 🕵Facebook: https://www.facebook.com/arjancodes 👀 Channel code reviewer board: - Ryan Laursen - Sybren A. Stüvel 🔖 Chapters: 0:00 Intro 1:27 Explaining the example 3:12 Code smell #1: imprecise types 5:52 Code smell #2: duplicate code 7:31 Code smell #3: not using available built-in functions 8:53 Code smell #4: vague identifiers 10:05 Code smell #5: using isinstance to separate behavior 13:40 Code smell #6: using boolean flags to make a method do 2 different things 15:58 Code smell #7: catching and then ignoring exceptions 17:29 Code smell #8 (BONUS): not using custom exceptions 21:30 Final thoughts #arjancodes #softwaredesign #python DISCLAIMER - The links in this description might be affiliate links. If you purchase a product or service through one of those links, I may receive a small commission. There is no additional charge to you. Thanks for supporting my channel so I can continue to provide you with free content each week!