Python 3.11 ((exclusive)) May 2026

Released in October 2022, Python 3.11 stands as a landmark update for the language. While the world has since moved to 3.12 and 3.13, 3.11 remains the bedrock for many production systems due to its maturity and significant, measurable improvements over Python 3.10. This update focused heavily on two core pillars: execution speed and error clarity .

# Python 3.11+ from asyncio import gather, sleep async def risky_task(name, fail): await sleep(0.1) if fail: raise ValueError(f"name failed") return name python 3.11

Before 3.11, if you ran multiple tasks and two failed with different errors, Python would raise the first exception and swallow the second. You would lose debugging information. Released in October 2022, Python 3

If you are still on Python 3.8 or 3.9, here is why you should make the jump to 3.11 (or later). The headline feature of Python 3.11 is the result of Microsoft’s "Faster CPython" team, led by Mark Shannon. For years, Python developers accepted the trade-off of slower execution for rapid development speed. Python 3.11 narrowed that gap significantly. # Python 3

# Python 3.10 Traceback (most recent call last): File "calc.py", line 2, in <module> result = 100 / (50 - 50) ZeroDivisionError: division by zero Traceback (most recent call last): File "calc.py", line 2, in <module> result = 100 / (50 - 50) ~~~~^~~~~~~~~~~~ ZeroDivisionError: division by zero

async def main(): tasks = [risky_task("A", True), risky_task("B", False), risky_task("C", True)] try: results = await gather( tasks, return_exceptions=False) except ValueError as eg: for exc in eg.exceptions: print(f"Handling: exc") Handling: A failed Handling: C failed

If you are starting a new project today, target . Your future self will thank you for the speed and clarity. Want to test it yourself? Install via pyenv or the official Python Docker image python:3.11-slim .