Gail  Wilderman

Gail Wilderman

1628152020

7 Python Code Smells: Olfactory Offenses To Avoid At All Costs

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.

✅ Write cleaner code with Sourcery: https://sourcery.ai/?utm_source=YouTube&utm_medium=aff&utm_campaign=ArjanCodes

My software development setup:
💻 Apple M1 Macbook Air: https://amzn.to/3fq9nG5
⌨ Keychron K2 mechanical keyboard (awesome typing experience): https://amzn.to/3f1dlEI

My camera gear:
📷 Sony A7C - https://amzn.to/3aShCtw
🎙 Rode Wireless GO - https://amzn.to/3pSLFVU
🎙 Electrovoice RE20 - https://amzn.to/3xQAJ0w
🎙 Sennheiser MKH416 P48 - https://amzn.to/3vOpx2i
🎚 Sound Devices Mix-Pre 3 II - https://amzn.to/3nSOc37
💡 GVM RGB LED light - https://amzn.to/3qRNJid
💡 GVM 100W light with lantern softbox - https://amzn.to/2NuU8lk

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 want to support this channel, you can buy me a coffee here: https://www.buymeacoffee.com/arjancodes.

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👀 Channel code reviewer board:

  • Ryan Paulsen
  • 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

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#softwaredesign #python

7 Python Code Smells: Olfactory Offenses To Avoid At All Costs