Programming language
Python is a widely used general-purpose programming language with a large standard library, popular for scripting, data science, web services, and automation.
Vercel made Python on its platform generally available, with three of the bundled Python SDKs still labelled beta. A FastAPI or Flask backend can now share previews and rollbacks with a JavaScript frontend, Vercel says.
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A Claude Code sub-agent allegedly deleted about 48,218 files in 103 seconds after a Python remover followed Windows junctions out of its copy. The account is unverified, but the failure path is documented: a copy with links back to the original carries the original inside it.
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TIOBE's October index lifts Python from 17.76% to 19.23% after the index added Mandarin Chinese search terms. TechRepublic says some rating changes may come from the wider coverage, so one month of rank moves is thin support for a hiring or training decision.
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Python 3.15 ends support for 3.10 and adds PEP 810 lazy imports, a keyword that code supporting 3.11 cannot contain. Simon Willison can now drop 3.10 and use 3.11 features, but the plugin startup fix needs a 3.15 minimum.
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Python 3.15.0, released October 9, 2026, ships a JIT that What's New puts at 7-8% on x86-64 Linux and 11-12% on AArch64 macOS. One data-team test on a shared Debian VM reproduced that band only for a pure-Python loop.
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Python 3.15's PEP 810 lazy imports cut a handler's health-check start from 512 ms to 32 ms in a dev.to benchmark that changed five import lines. The boto3 route fell only from 614 ms to 361 ms, so the gain depends on what a cold process runs first.
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Python 3.15, released 9 October 2026, adds a lazy soft keyword that waits to load a module until code first touches its name. CLIs and test runners start faster, and a missing or misspelled module now raises only when that code path first runs.
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Python 3.15 makes UTF-8 its default encoding and ships an experimental JIT 7-8% faster by geometric mean on x86-64 Linux. Each platform's JIT figure uses a different baseline, so a service learns what the JIT does for it only by rerunning the test.
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NVIDIA's KGMON team took second in the KDD Cup 2026 Data Agents competition with an agent limited to four functions. The rules fixed a small model, so all the tuning went into the harness, the same position as any team committed to a small open model.
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Imperva found that a syntactically valid SQL query under 2MB can drive the SQLGlot parser past 1.5GB of memory, about 750 times the input. Tools that parse user or model-supplied SQL before the database sees it carry the same exposure until they upgrade.
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MITRE rated CrewAI's nine-name code-sandbox blocklist a CVSS 8.1 flaw, bypassed by a call that executes no import. The fix removed the feature, so teams running agent-written code need isolation at the OS or process level.
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Rubrica, a self-hosted hackathon portal, has every judge in a track review the same anchor projects before its k=3 shrinkage formula adjusts any score. That shared set lets the maths tell a harsh judge from one who drew a weak batch.
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LiteLLM's standalone Rust path added 0.7 ms of p99 latency against 257.7 ms for its Python proxy in July 22 benchmark artifacts reviewed on dev.to. Logging, persistence and spend tracking were off for the run, so the gap measures forwarding alone.
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IBM and Oxford Economics found that 60% of 8,800 full-time employees worried AI was eroding their skills. The closest controlled test, a 52-developer Anthropic experiment, supports building practice into AI-assisted work and is too small to blame the tools for skill loss.
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Python shipped 3.10.22 as the final release of the 3.10 series, with eight CVE fixes and no security updates after it. Any flaw reported from here on stays open on 3.10, so teams still running it have to move to a series that is still patched.
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Sophos linked ClickFix lures that open Windows Terminal, not the Run dialog, to STAC4924, a campaign it has tracked since at least March. The intrusions plant Lorem Ipsum Loader and a Python reverse-tunnel implant that relays attacker traffic through the victim host.
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PEP 827 would add conditional, comprehension and member types so Python annotations can infer return types the way Prisma's TypeScript ORM does. Michael J. Sullivan spent his Language Summit slot on how those annotations get stored for runtime users like Pydantic and FastAPI.
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Pablo Galindo Salgado proposed a std namespace at the 2026 Python Language Summit that guarantees import std.json reaches the standard library. Because bare import json keeps working, a project with a stray random.py stays exposed until its own imports change.
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Tobias Wrigstad, Fridtjof Stoldt and Donghee Na proposed Behavior-Oriented Concurrency to meet PEP 779's one unmet free-threading requirement. Its scheduler would turn deadlocks and data races into exceptions before code runs.
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Mark Shannon told the Python Language Summit that GC takes 11.67% of CPython's runtime and proposed a collector that is both generational and incremental. His 3.14 incremental collector was reverted over memory pressure, so the hybrid must match its short pauses on less memory.
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Build · September 21, 2026 · Confirmed2 publishers
Build · September 23, 2026 · One report1 publisher