[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

mpl_image_labeller/_util.py

@@ -51,7 +51,6 @@ def list_to_onehot(labels, classes):
     lookup = {c: i for i, c in enumerate(classes)}
     arr = np.zeros((len(labels), len(classes)), dtype=bool)
     for i, l in enumerate(labels):
-
         if l is None:
             continue
         elif isinstance(l, str) or not isinstance(l, Iterable):

setup.cfg

@@ -7,17 +7,14 @@ url = https://mpl-image-labeller.rtfd.io
 author = Ian Hunt-Isaak
 author_email = [email protected]
 license = BSD-3-Clause
-license_file = LICENSE
+license_files = LICENSE
 classifiers =
     Development Status :: 5 - Production/Stable
     Framework :: Matplotlib
     License :: OSI Approved :: BSD License
     Natural Language :: English
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.7
-    Programming Language :: Python :: 3.8
-    Programming Language :: Python :: 3.9
     Programming Language :: Python :: Implementation :: CPython
 project_urls =
     Tracker = https://github.com/ianhi/mpl-image-labeller/issues
@@ -29,7 +26,7 @@ project_urls =
 packages = find:
 install_requires =
     matplotlib
-python_requires = >=3.7
+python_requires = >=3.8
 zip_safe = False
 
 [options.extras_require]