Python: JIT Gets Supercharged & Developer Experience Wins
Today we're diving into a massive day for Python with 20 merged pull requests bringing major JIT compiler improvements, async performance boosts, and quality-of-life fixes. Mark Shannon delivered specialized SEND instructions for better async performance, while the community tackled everything from pprint modernization to smoother debugging workflows.
Duration: PT3M59S
Episode overview
This episode is a short developer briefing from Python.
It explains recent repository work in plain language.
- Show: Python
- Published: 2026-05-06T10:03:19Z
- Audio duration: PT3M59S
Transcript excerpt
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Hey there, Python friends! Welcome back to another episode of the Python podcast. I'm so excited to share what's been happening in the CPython world because wow - May 6th, 2026 was absolutely buzzing with activity. We had 20 pull requests merged and 12 additional commits, and there are some genuinely exciting…
Let's jump right into the big story of the day - and it's all about making Python faster and smarter under the hood. Mark Shannon just landed what might be one of the most technically impressive pull requests I've seen in a while. We're talking about SEND specialization, which sounds super technical, but here's why…
You know how Python has been getting faster and faster with each release? Well, this change is specifically targeting async code - those async generators and iterators that power so much of modern Python applications. Mark added two new specialized instructions called SEND_VIRTUAL and SEND_ASYNC_GEN. Think of these…
The really cool part? This isn't just about raw interpreter speed - though async generators are seeing 4 to 6 percent performance improvements. This is actually laying groundwork for the JIT compiler to trace through SEND instructions more effectively.…
S…
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