feat: drop Python 3.8

Signed-off-by: Henry Schreiner <[email protected]>

.github/workflows/ci.yml

@@ -34,7 +34,6 @@ jobs:
     strategy:
       matrix:
         python-version:
-        - "3.8"
         - "3.9"
         - "3.10"
         - "3.11"

README.md

@@ -19,7 +19,7 @@
 
 Hist is an analyst-friendly front-end for
 [boost-histogram](https://github.com/scikit-hep/boost-histogram), designed for
-Python 3.8+ (3.6-3.7 users get older versions). See [what's new](https://hist.readthedocs.io/en/latest/changelog.html).
+Python 3.9+ (3.6-3.8 users get older versions). See [what's new](https://hist.readthedocs.io/en/latest/changelog.html).
 
 ![Slideshow of features. See docs/banner_slides.md for text if the image is not readable.](https://github.com/scikit-hep/hist/raw/main/docs/_images/banner.gif)
 

docs/user-guide/accumulators.rst

@@ -26,8 +26,8 @@ is internally used by the Double and Unlimited storages to perform sums when
 needed. It uses a highly accurate Neumaier sum to compute the floating point
 sum with a correction term. Since this accumulator is never returned by a
 histogram, it is not available in a view form, but only as a single accumulator
-for comparison and access to the algorithm. Usage example in Python 3.8,
-showing how non-accurate sums fail to produce the obvious answer, 2.0::
+for comparison and access to the algorithm. Usage example, showing how
+non-accurate sums fail to produce the obvious answer, 2.0::
 
     import math
     import numpy as np

pyproject.toml

@@ -17,7 +17,6 @@ classifiers = [
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3 :: Only",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -34,7 +33,7 @@ keywords = [
     "boost-histogram",
     "dask-histogram",
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 dependencies = [
     "boost-histogram>=1.3.1,<1.6",
     "histoprint>=2.2.0",
@@ -118,7 +117,7 @@ filterwarnings = [
 [tool.mypy]
 warn_unused_configs = true
 files = "src"
-python_version = "3.8"
+python_version = "3.9"
 strict = true
 enable_error_code = ["ignore-without-code", "truthy-bool", "redundant-expr"]
 warn_unreachable = true
@@ -138,7 +137,7 @@ ignore_missing_imports = true
 
 
 [tool.pylint]
-py-version = "3.8"
+py-version = "3.9"
 extension-pkg-allow-list = ["boost_histogram._core"]
 reports.output-format = "colorized"
 similarities.ignore-imports = "yes"

src/hist/basehist.py

@@ -4,16 +4,12 @@
 import operator
 import typing
 import warnings
+from collections.abc import Generator, Iterator, Mapping, Sequence
 from typing import (
     Any,
     Callable,
-    Generator,
-    Iterator,
-    Mapping,
     Protocol,
-    Sequence,
     SupportsIndex,
-    Tuple,
     Union,
 )
 
@@ -48,8 +44,8 @@ def __lt__(self, __other: Any) -> bool: ...
     SupportsIndex, str, Callable[[bh.axis.Axis], int], slice, "ellipsis"
 ]
 IndexingWithMapping = Union[InnerIndexing, Mapping[Union[int, str], InnerIndexing]]
-IndexingExpr = Union[IndexingWithMapping, Tuple[IndexingWithMapping, ...]]
-AxisTypes = Union[AxisProtocol, Tuple[int, float, float]]
+IndexingExpr = Union[IndexingWithMapping, tuple[IndexingWithMapping, ...]]
+AxisTypes = Union[AxisProtocol, tuple[int, float, float]]
 
 
 # Workaround for bug in mplhep

src/hist/interop.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
-from collections.abc import Sequence
-from typing import Any, Callable, Iterator, Protocol, TypeVar, cast
+from collections.abc import Iterator, Sequence
+from typing import Any, Callable, Protocol, TypeVar, cast
 
 import numpy as np
 

src/hist/plot.py

@@ -2,7 +2,8 @@
 
 import inspect
 import sys
-from typing import Any, Callable, Iterable, Literal, NamedTuple, Union
+from collections.abc import Iterable
+from typing import Any, Callable, Literal, NamedTuple, Union
 
 import numpy as np
 

src/hist/quick_construct.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING, Any, Callable, Iterable
+from collections.abc import Iterable
+from typing import TYPE_CHECKING, Any, Callable
 
 import numpy as np
 

src/hist/stack.py

@@ -2,7 +2,8 @@
 
 import copy
 import typing
-from typing import Any, Iterator
+from collections.abc import Iterator
+from typing import Any
 
 import histoprint
 import numpy as np