Exploring the New Features of Python 3.9 | Real Python Podcast #30

Описание: Python 3.9 has arrived! This week on the show, former guest and Real Python author Geir Arne Hjelle returns to talk about his recent article, "Python 3.9: Cool New Features for You to Try". Also joining the conversation is Real Python video course instructor and author Christopher Trudeau. Christopher has created a video course, which was released this week also, based on Geir Arne's article. We talk about time zones, merging dictionaries, the new parser, type hints, and more.

Geir Arne and Christopher not only cover the new features, but they also offer advice about ways you might incorporate them into your code. We discuss what you should think about before updating your code.

Topics:

00:00:00 -- Introduction
00:02:02 -- Proper Time Zone support
00:05:38 -- What to do if your OS does not have tzdata?
00:07:11 -- How do you add time zone info to your Python code?
00:08:24 -- Historic changes to time zones
00:10:48 -- New operators for updating dictionaries
00:15:44 -- Geir Arne's PyCon 2020 decorators tutorial
00:18:02 -- Changes to decorator syntax
00:24:08 -- Annotated type hints
00:32:36 -- Video Course Spotlight
00:33:26 -- The PEG parser
00:37:51 -- Potential for new enhancements in upcoming releases
00:42:40 -- String methods to remove prefixes and suffixes
00:44:22 -- Type hint lists and dictionaries directly
00:47:29 -- Topological Sort
00:52:03 -- Greatest Common Divisor (GCD) and Least Common Multiple (LCM)
00:53:50 -- New HTTP status codes
00:58:29 -- Should you upgrade?
01:07:58 -- Potential issue with Python 3.10 versioning
01:10:18 -- What are you excited about in the world of Python?
01:12:52 -- What do you want to learn next?
01:14:08 -- Thanks and goodbyes

👉 Links from the show: https://realpython.com/podcasts/rpp/30/