Use pyproject.toml instead of setup.py

pyproject.toml

@@ -0,0 +1,63 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "optimparallel"
+version = "0.1.4"
+authors = [{ name = "Florian Gerber", email = "flora.fauna.gerber@gmail.com" }, {name = "Lewis Blake"}]
+description = "A parallel version of the L-BFGS-B optimizer of scipy.optimize.minimize()."
+classifiers = [
+    "Programming Language :: Python :: 3 :: Only",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
+    "Development Status :: 3 - Alpha",
+    "Operating System :: OS Independent",
+    "Topic :: Scientific/Engineering :: Mathematics",
+]
+requires-python = ">=3.9"
+dependencies = [
+    "scipy", 
+    "numpy",
+]
+
+[project.readme]
+file = "README.md"
+content-type = "text/markdown"
+
+[project.urls]
+Homepage = "https://github.com/florafauna/optimParallel-python"
+"Bug Tracker" = "https://github.com/florafauna/optimParallel-python/issues"
+"Source Code" = "https://github.com/florafauna/optimParallel-python"
+
+[project.optional-dependencies]
+test = [
+    "pytest",
+]
+lint = ["mypy", "black"]
+dev = ["pytest-sugar"]
+
+# tox (https://tox.readthedocs.io/) is a tool for running tests
+# in multiple virtualenvs. This configuration file will run the
+# test suite on all supported python versions. To use it, "pip install tox"
+# and then run "tox" from this directory.
+
+[tox]
+# skipsdist = true
+envlist = """
+# py
+py39
+py310
+py311
+py312
+# pypy"""
+
+[testenv]
+deps = """
+pytest
+numpy
+scipy"""
+commands = "pytest"

src/optimparallel.py

@@ -13,6 +13,7 @@
 - optimparallel: same as `minimize_parallel()`
 - fmin_l_bfgs_b_parallel: parallel version of `scipy.optimize.fmin_l_bfgs_b()`
 """
+
 from __future__ import annotations
 
 import warnings
@@ -420,9 +421,9 @@ def minimize_parallel(
     if parallel_used.get("loginfo"):
         out.loginfo = {
             k: (
-                lambda x: np.array(x)
-                if isinstance(x[0], list)
-                else np.array(x)[np.newaxis].T
+                lambda x: (
+                    np.array(x) if isinstance(x[0], list) else np.array(x)[np.newaxis].T
+                )
             )(v)
             for k, v in fun_jac.info.items()
         }