Drop support Python 3.7, run tests on Python 3.11

FontTools has dropped support for 3.7, thus we follow suit

fonttools/fonttools#2879
fonttools/fonttools#2878

.github/workflows/ci.yml

@@ -40,7 +40,7 @@ jobs:
  runs-on: ${{ matrix.platform }}
  strategy:
  matrix:
- python-version: ['3.7', '3.10']
+ python-version: ['3.8', '3.11']
  platform: [ubuntu-latest, windows-latest]
 
  steps:
@@ -54,7 +54,7 @@ jobs:
  - name: Run Tox
  run: tox -e py-cov
  - name: Re-run Tox (without cattrs)
- if: startsWith(matrix.platform, 'ubuntu-latest') && startsWith(matrix.python-version, '3.10')
+ if: startsWith(matrix.platform, 'ubuntu-latest') && startsWith(matrix.python-version, '3.11')
  run: |
  .tox/py-cov/bin/pip uninstall -y cattrs
  tox -e py-cov --skip-pkg-install

mypy.ini

@@ -1,5 +1,5 @@
 [mypy]
-python_version = 3.7
+python_version = 3.8
 
 # Untyped definitions and calls
 disallow_incomplete_defs = True

setup.cfg

@@ -20,7 +20,7 @@ classifiers =
 [options]
 package_dir = =src
 packages = find:
-python_requires = >=3.7
+python_requires = >=3.8
 install_requires =
  attrs >= 22.1.0
  fonttools[ufo] >= 4.0.0

src/ufoLib2/objects/contour.py

@@ -2,7 +2,7 @@
 
 import warnings
 from collections.abc import MutableSequence
-from typing import TYPE_CHECKING, Iterable, Iterator, List, Optional, overload
+from typing import Iterable, Iterator, List, Optional, overload
 
 from attrs import define, field
 from fontTools.pens.basePen import AbstractPen
@@ -13,16 +13,10 @@
 from ufoLib2.serde import serde
 from ufoLib2.typing import GlyphSet
 
-# For Python 3.7 compatibility.
-if TYPE_CHECKING:
- ContourMapping = MutableSequence[Point]
-else:
- ContourMapping = MutableSequence
-
 
 @serde
 @define
-class Contour(ContourMapping):
+class Contour(MutableSequence[Point]):
  """Represents a contour as a list of points.
 
  Behavior:

src/ufoLib2/objects/image.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from collections.abc import Mapping
-from typing import TYPE_CHECKING, Any, ClassVar, Iterator, Optional, Tuple
+from typing import Any, ClassVar, Iterator, Optional, Tuple
 
 from attrs import define, field
 from fontTools.misc.transform import Identity, Transform
@@ -10,16 +10,10 @@
 
 from .misc import _convert_transform
 
-# For Python 3.7 compatibility.
-if TYPE_CHECKING:
- ImageMapping = Mapping[str, Any]
-else:
- ImageMapping = Mapping
-
 
 @serde
 @define
-class Image(ImageMapping):
+class Image(Mapping[str, Any]):
  """Represents a background image reference.
 
  See http://unifiedfontobject.org/versions/ufo3/images/ and

src/ufoLib2/objects/misc.py

@@ -158,15 +158,8 @@ class DataPlaceholder(bytes):
 Tds = TypeVar("Tds", bound="DataStore")
 
 
-# For Python 3.7 compatibility.
-if TYPE_CHECKING:
- DataStoreMapping = MutableMapping[str, bytes]
-else:
- DataStoreMapping = MutableMapping
-
-
 @define
-class DataStore(DataStoreMapping):
+class DataStore(MutableMapping[str, bytes]):
  """Represents the base class for ImageSet and DataSet.
 
  Both behave like a dictionary that loads its "values" lazily by default and only
@@ -353,17 +346,10 @@ def _structure(
  return self
 
 
-# For Python 3.7 compatibility.
-if TYPE_CHECKING:
- AttrDictMixinMapping = Mapping[str, Any]
-else:
- AttrDictMixinMapping = Mapping
-
-
 _T = TypeVar("_T", bound="AttrDictMixin")
 
 
-class AttrDictMixin(AttrDictMixinMapping):
+class AttrDictMixin(Mapping[str, Any]):
  """Read attribute values using mapping interface.
 
  For use with Anchors, Guidelines and WoffMetadata classes, where client code

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = lint, py3{7,8,9,10}-cov, htmlcov
+envlist = lint, py3{8,9,10,11}-cov, htmlcov
 isolated_build = true
 
 [testenv]