Transformative new Python features are coming in Python 3.15. In addition to lazy imports and an immutable frozendict type, the new Python release will deliver significant improvements to the native JIT compiler and introduce a more explicit agenda for how Python will support WebAssembly.

Top picks for Python readers on InfoWorld

Speed-boost your Python programs with the new lazy imports feature
Starting with Python 3.15, Python imports can work lazily, deferring the cost of loading big libraries. And you don’t have to rewrite your Python apps to use it.

How Python is getting serious about Wasm
Python is slowly but surely becoming a first-class citizen in the WebAssembly world. A new Python Enhancement Proposal, PEP 816, describes how that will happen.

Get started with Python’s new frozendict type
A new immutable dictionary type in Python 3.15 fills a long-desired niche in Python — and can be used in more places than ordinary dictionaries.

How to use Python dataclasses
Python dataclasses work behind the scenes to make your Python classes less verbose and more powerful all at once.

More good reads and Python updates elsewhere

Progress on the “Rust for CPython” project
The plan to enhance the Python interpreter by using the Rust language stirred controversy. Now it’s taking a new shape: use Rust to build components of the Python standard library.

Profiling-explorer: Spelunk data generated by Python’s profilers
Python’s built-in profilers generate reports in the opaque pstats format. This tool turns those binary blobs into interactive, explorable views.

The many failures that led to the LiteLLM compromise
How did a popular Python package for working with multiple LLMs turn into a vector for malware? This article reveals the many weak links that made it possible.

Slightly off-topic: Why open source contributions sit untouched for months on end
CPython has more than 2,200 open pull requests. The fix, according to this blog, isn’t adding more maintainers, but “changing how work flows through the one maintainer you have.”