Python 3.11: Cool New Features for You to Try
Table of Contents
- More Informative Error Tracebacks
- Faster Code Execution
- Nicer Syntax for Asynchronous Tasks
- Improved Type Variables
- Support for TOML Configuration Parsing
- Other Pretty Cool Features
- Faster Startup
- Zero-Cost Exceptions
- Exception Groups
- Exception Notes
- Negative Zero Formatting
- Dead Batteries
- So, Should You Upgrade to Python 3.11?
- Conclusion
Python 3.11 was published on October 24, 2022. This latest version of Python is faster and more user-friendly. After seventeen months of development, it’s now ready for prime-time use.
As in every version, Python 3.11 comes with lots of improvements and changes. You can see a list of all of them in the documentation. Here, you’ll explore the coolest and most impactful new features.
In this tutorial, you’ll learn about new features and improvements like:
- Better error messages with more informative tracebacks
- Faster code execution due to considerable effort in the Faster CPython project
- Task and exception groups that simplify working with asynchronous code
- Several new typing features that improve Python’s static typing support
- Native TOML support for working with configuration files
If you want to try any of the examples in this tutorial, then you’ll need to use Python 3.11. 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.
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. Click the link below to download code examples demonstrating the new capabilities of Python 3.11:
Free Download: Click here to download free sample code that demonstrates some of the new features of Python 3.11.
More Informative Error Tracebacks
Python is often recognized as a good beginner programming language, with its readable syntax and powerful data structures. A challenge for all, but especially those new to Python, is how to interpret the traceback that’s displayed when Python encounters an error.
In Python 3.10, Python’s error messages were greatly improved. Similarly, one of Python 3.11’s most anticipated features will also boost your developer experience. Decorative annotations are added to the tracebacks and can help you more quickly interpret an error message.
To see a quick example of the enhanced traceback, add the following code to a file named inverse.py: