Summary of Major Changes Between Python Versions
The article details Python updates from versions 3.7 to 3.12, highlighting async/await, Walrus operator, Type hints, F-strings, Assignment expressions, Typing enhancements, Structural Pattern Matching, Tomllib, and useful tools.
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The article provides a comprehensive overview of the major changes introduced in various versions of Python, starting from Python 3.7 to Python 3.12. It covers significant updates such as async and await, Walrus operator, Type hints, F-strings, and more in earlier versions. Python 3.8 introduced features like Assignment expressions and Self-documenting f-strings. Python 3.9 brought improvements in Typing with Builtin Generics and Remove Prefix/Suffix functionalities. Python 3.10 introduced Structural Pattern Matching and enhancements in Typing with TypeAlias and TypeGuard. Python 3.11 included updates like Tomllib, Exception Groups, and enriching exceptions with notes. Python 3.12 featured enhancements in Typing with Type Parameter Syntax, F-string changes, and the Buffer protocol. The article also mentions useful tools like Ruff, Pyupgrade, and Black for linting and code formatting. It serves as a valuable resource for developers looking to understand and leverage the new features and improvements in each Python version efficiently.
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11 commentsBut of course, I have to learn all of it to understand other people's code. Python's syntax has really gotten worse. The match statement is ugly in comparison to functional languages, I'm not sure about f-strings, the with-statement extension adds new overhead to the reader.
Python is really like C++ now, except 50 times slower (yes, I know about the slow std::unordered_map special case that is due to its rigid specification).
I used to hate TypeScript (circa 2016) because it kept bugging me with typing errors, and I used to sprinkle "any" to shut it up.
Ned’s list is what I usually use.
```python if header.startswith("X-Forwarded-"): section = header.removeprefix("X-Forwarded-") ```
the `startswith()` check is unnecessary. If `header` doesn't start with "X-Forwarded-" then `header.removeprefix("X-Forwarded-")` just returns `header`.
Nice summary doc, with good examples. You can also visit [this site of mine](https://ptmcg.pythonanywhere.com/python_nutshell_app_a_searc...) to search for changes by version (3.7-3.11).
I didn't know about the pyupgrade tool. Very useful.
I'd love to see a step further, and avoid the circular import problem entirely. It's something I fight with everything time I work in Python. I find that I am forced to structure my Python programs in a way specifically designed to avoid this instead of what makes sense for organization. Or I will C+P functions if I feel that tradeoff is not worth it.
The piping and typing changes are so useful ! Bookmarked and I'll be coming back to this often.
I also caught the sleep token references. Well done .
I've missed a lot of these that I'm going to take advantage of!
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