Race Condition Python Packages

ftcheck

Find free-threading bugs in Rust/PyO3 Python extensions: data races, crashes and hangs that only appear without the GIL. Runs your own tests across threads under ThreadSanitizer, plus a static lint and a stress mode.

h2spacex

HTTP/2 Last Frame Synchronization (also known as Single Packet Attack) low Level Library / Tool based on Scapy‌ + Exploit Timing Attacks

uniqpath

Avoid overwriting files: get a unique filename or directory path in Python, atomically reserved for concurrent jobs. Zero dependencies, with a CLI.

pytest-together

Run things at the same instant in a test, and fail if they did not actually overlap.

django-concurrency-safe

Prevent race conditions in Django using PostgreSQL advisory locks.