This article explains the 5 best new features of Python 3.15 with clear examples and explanations.Python 3.15 has been published and it packs plenty of new features and improvements over Python 3.14.This article explores the five most exciting new features of Python 3.15:Lazy importsNew built-in frozendictNew built-in sentinelUnpacking inside comprehensionsTachyon, a new sampling profilerYou'll get the elevator pitch of each feature and you'll see a couple of examples of their usage.By the end of this article you'll have a clear picture of some of the new cool features that Python 3.15 brings to the table and you'll be excited to try them out.15 days of Python 3.15To celebrate the release of Python 3.15, over the next 15 business days I'll be writing about a new 3.15 feature every day.Explained clearly and with examples so you don't have to sift through the changelog.Subscribe to receive this free email series: Enroll for free 🐍🚀 If you want, you can also check the schedule of the upcoming emails.Lazy importsExplicit lazy imports, introduced in PEP 810, introduce the new keyword lazy so that you can mark an import as lazy.Lazy imports don't run the module you're importing until the imported name is needed.This feature is very useful if you have applications that have a slow startup time because they import heavy modules.For example, you can speed up the startup time of a CLI by lazy importing the dependencies of the CLI or the startup time of a development server that doesn't need to frontload every single dependency while you're debugging.A lazy import starts with the...