# SciPy 1.8.1 Release Notes

SciPy 1.8.1 is a bug-fix release with no new features compared to 1.8.0. Notably, usage of Pythran has been restored for Windows builds/binaries.

## Authors

- Henry Schreiner

- Maximilian Nöthe

- Sebastian Berg (1)

- Sameer Deshmukh (1) +

- Niels Doucet (1) +

- DWesl (4)

- Isuru Fernando (1)

- Ralf Gommers (4)

- Matt Haberland (1)

- Andrew Nelson (1)

- Dimitri Papadopoulos Orfanos (1) +

- Tirth Patel (3)

- Tyler Reddy (46)

- Pamphile Roy (7)

- Niyas Sait (1) +

- 8. Vetinari (2)

- Warren Weckesser (1)

A total of 17 people contributed to this release. People with a “+” by their names contributed a patch for the first time. This list of names is automatically generated, and may not be fully complete.

### Issues closed for 1.8.1

- #15258: BUG: sparse `dot` method should accept scalars

- #15433: BUG: optimize: minimize: `ValueError` when `np.all(lb==ub)`

- #15539: BUG: Questionable macOS wheel contents

- #15543: REL: list contributors using GitHub handles

- #15552: BUG: MacOS universal2 wheels have two gfortran shared libraries,…

- #15636: BUG: DOCS incorrect `source` link on docs

- #15678: BUG: scipy.stats.skew does not work with scipy.stats.bootstrap

- #16174: Failure of `TestCorrelateComplex.test_rank0` in CI with NumPy…

### Pull requests for 1.8.1

- #15167: CI: make sure CI stays on VS2019 unless changed explicitly

- #15306: Revert “BLD Respect the –skip-build flag in setup.py”

- #15504: MAINT: np.all(lb == ub) for optimize.minimize

- #15530: REL: prep for SciPy 1.8.1

- #15531: [BUG] Fix importing scipy.lib._pep440

- #15558: CI: re-enable Pythran in Azure Windows CI jobs

- #15566: BUG: fix error message

- #15580: BUG: Avoid C Preprocessor symbol in _hypotests_pythran.py.

- #15614: REL: filter out @ in authors name and add count

- #15637: DOC, MAINT: fix links to wrapped functions and SciPy’s distributions

- #15669: BUG: stats: fix a bug in UNU.RAN error handler

- #15691: MAINT: stats: bootstrap: fix bug with `method=”BCa”` when `statistic`…

- #15798: MAINT,BUG: stats: update to UNU.RAN 1.9.0

- #15870: TST: signal: Convert a test with ‘assert_array_less’ to ‘less…

- #15910: make sure CI stays on VS2019 unless changed explicitly

- #15926: MAINT: 1.8.1 backports/prep

- #16035: BUG: allow scalar input to the `.dot` method of sparse matrices

- #16041: MAINT: add include dir explicitly for PROPACK to build with classic…

- #16139: WIP, BLD, MAINT: git security/version shim

- #16152: TST: Fortify invalid-value warning filters to small changes in…

- #16155: MAINT: correct wrong license of Biasedurn

- #16158: MAINT: better UNU.RAN licensing information

- #16163: MAINT: update UNU.RAN copyright information

- #16172: CI: pin Pip to 22.0.4 to avoid issues with `–no-build-isolation`

- #16175: TST: fix test failure due to changes in numpy scalar behavior.