os.listdir(-1) and os.scandir(-1) now fail with OSError(errno.EBADF)
rather than listing the current directory.
os.listxattr(-1) now fails with OSError(errno.EBADF) rather than
listing extended attributes of the current directory.
Remove PyThread_type_lock (now uses PyMutex internally).
Add new benchmark options:
- work_inside/work_outside: control work inside and outside the critical section to vary contention levels
- num_locks: use multiple independent locks with threads assigned round-robin
- total_iters: fixed iteration count per thread instead of time-based, useful for measuring fairness
- num_acquisitions: lock acquisitions per loop iteration
- random_locks: acquire random lock each iteration
Also return elapsed time from benchmark_locks() and switch lockbench.py to use argparse.
It could happen if the size of the input is more than 4/5 of sys.maxsize
(only feasible on 32-bit platforms).
Also simplify the integer overflow checks in the Base64 encoder, and
harmonize them with the code for Ascii85 and Base85.
Fix an issue where passing invalid arguments to `os.posix_spawn[p]` functions
raised a SystemError instead of a TypeError, and allow to explicitly use `None`
for `scheduler` and `setpgroup` as specified in the docs.
Ensure that APPENDS and SETITEMS are never used for a batch of size 1.
Ensure that ADDITEMS and SETITEMS are never used for a batch of size 0.
This harmonizes the C implementation with the Python implementation
which already guarantees this and makes a pickle a tiny bit smaller
with a tiny chance (about 0.1%).
Saves 1 byte for list and dict with size 1001, 2001, ...
Saves 2 bytes for set and dict with size 1000, 2000, ...
Since the code for rule NR2 is already here, to support CJK unified
ideographs and Tangut ideographs, it can also be used for other names
derived by rule NR2.
In newPySSLSocket(), when SSL_new() returns NULL, Py_DECREF(self)
was called before _setSSLError(get_state_ctx(self), ...), causing
a use-after-free. Additionally, get_state_ctx() was called with
self (PySSLSocket*) instead of sslctx (PySSLContext*), which is
a type confusion bug.
Fix by calling _setSSLError() before Py_DECREF() and using
sslctx instead of self for get_state_ctx().
Adds `prefixmatch` APIs to the re module as an alternate name for our long existing `match` APIs to help alleviate a common Python confusion for those coming from other languages regular expression libraries.
These alleviate common confusion around what "match" means as Python is different than other popular languages regex libraries in our use of the term as an API name. The original `match` names are **NOT being deprecated**. Source tooling like linters, IDEs, and LLMs could suggest using `prefixmatch` instead of match to improve code health and reduce cognitive burden of understanding the intent of code when configured for a modern minimum Python version.
See the documentation changes for a better description.
Discussions took place in the PR, in the issue, and finally at https://discuss.python.org/t/add-re-prefixmatch-deprecate-re-match/105927
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
