Скачать с ютуб If You’re Not Using Python DATA CLASSES Yet, You Should 🚀 в хорошем качестве

If You’re Not Using Python DATA CLASSES Yet, You Should 🚀

This video is a tutorial about Python's dataclasses. I take you through an example that shows what you can do with them. Python data classes are - as you'd expect - in particular suitable to model classes that represent data, and as such they offer easy mechanisms to initialize, print, order, sort, and compare data. Note that although I'm using a sort_index attribute, strictly speaking that's not needed in this case, because a data class uses a tuple of its attributes in the class definition as the default for sorting. I'm not a fan of this kind of hidden behavior, so I prefer to do it explicitly (using something that is called sort_index in this case). Another advantage of using a separate field, is that you can do more complicated ordering, using for example a weighted combination of age and strength. 💡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... The 30-Day Design Challenge: https://www.arjancodes.com/30ddc 🛒 GEAR & RECOMMENDED BOOKS: https://kit.co/arjancodes. Some interesting links: - https://realpython.com/python-data-cl... - Frozen instances: https://docs.python.org/3/library/dat... - If you want to go 'next-level' with dataclasses, check out Pydantic (https://pydantic-docs.helpmanual.io/). Pydantic enforces type hints at runtime, and offers a really nice extension for data validation. - The code from this video is available here: https://github.com/ArjanCodes/2021-da... 💬 Join my Discord server here: https://discord.arjan.codes 🐦Twitter:   / arjancodes   🌍LinkedIn:   / arjancodes   🕵Facebook:   / arjancodes   🔖 Chapters: 0:00 Intro 0:33 Behavior-driven vs data-driven classes 2:11 Explaining the example 3:31 Creating a dataclass 4:37 Sorting and comparing 6:58 Default values 7:40 Creating read-only (frozen) objects 8:55 String representation of data 9:34 Final thoughts #arjancodes #softwaredesign #python Thumbnail photo background by Markus Spiske: https://unsplash.com/@markusspiske 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!