Assume you have a file named programmers.json with the following content: To appreciate the power of the improved tracebacks, you’ll build a small parser of information about a few programmers.
They may be able to convey information that you couldn’t get from the traceback by itself before. However, the annotated tracebacks are even more powerful if your code is more complex.
Getting this extra help in spotting mistakes is useful. The actual culprit is calling inverse(0), as 0 has no inverse. In this example, a ZeroDivisionError is caused by the division 1 / number. As usual with tracebacks, you should start at the bottom and work your way up. They’re used to guide your attention to the code that’s causing the error. Note the ^ and ~ symbols embedded within the traceback. Traceback (most recent call last): File "/home/realpython/inverse.py", line 6, in print(inverse(0)) ^^^^^^^^^^ File "/home/realpython/inverse.py", line 4, in inverse return 1 / number ~~^~~~~~~~ ZeroDivisionError: division by zero Click the link below to download code examples demonstrating the new capabilities of Python 3.11: In addition to learning more about the new features coming to the language, you’ll also get some advice about what to consider before upgrading to the new version. The Python 3 Installation & Setup Guide and How Can You Install a Pre-Release Version of Python? walk you through several options for adding a new version of Python to your system. If you want to try any of the examples in this tutorial, then you’ll need to use Python 3.11. Native TOML support for working with configuration files.Several new typing features that improve Python’s static typing support.Task and exception groups that simplify working with asynchronous code.Faster code execution due to considerable effort in the Faster CPython project.Better error messages with more informative tracebacks.In this tutorial, you’ll learn about new features and improvements like: Here, you’ll explore the coolest and most impactful new features. You can see a list of all of them in the documentation. After seventeen months of development, it’s now ready for prime-time use.Īs in every version, Python 3.11 comes with lots of improvements and changes. This latest version of Python is faster and more user-friendly. Python 3.11 was published on October 24, 2022. Watch it together with the written tutorial to deepen your understanding: Cool New Features in Python 3.11 Watch Now This tutorial has a related video course created by the Real Python team.
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