HEP1 - Drop support for Python 3.7

.github/workflows/build.yaml

@@ -20,8 +20,8 @@ jobs:
         shell: bash -l {0}
     env:
       CHANS_DEV: "-c pyviz/label/dev -c bokeh"
-      PKG_TEST_PYTHON: "--test-python=py37"
-      PYTHON_VERSION: "3.7"
+      PKG_TEST_PYTHON: "--test-python=py38"
+      PYTHON_VERSION: "3.8"
       CHANS: "-c pyviz"
       MPLBACKEND: "Agg"
       CONDA_UPLOAD_TOKEN: ${{ secrets.CONDA_UPLOAD_TOKEN }}
@@ -32,7 +32,7 @@ jobs:
       - uses: conda-incubator/setup-miniconda@v2
         with:
           miniconda-version: "latest"
-          python-version: 3.8
+          python-version: 3.9
       - name: Fetch unshallow
         run: git fetch --prune --tags --unshallow -f
       - name: Set output
@@ -60,8 +60,8 @@ jobs:
         shell: bash -l {0}
     env:
       CHANS_DEV: "-c pyviz/label/dev -c bokeh"
-      PKG_TEST_PYTHON: "--test-python=py37"
-      PYTHON_VERSION: "3.7"
+      PKG_TEST_PYTHON: "--test-python=py38"
+      PYTHON_VERSION: "3.8"
       CHANS: "-c pyviz"
       MPLBACKEND: "Agg"
       PPU: ${{ secrets.PPU }}
@@ -74,7 +74,7 @@ jobs:
       - uses: conda-incubator/setup-miniconda@v2
         with:
           miniconda-version: "latest"
-          python-version: 3.8
+          python-version: 3.9
       - name: Fetch unshallow
         run: git fetch --prune --tags --unshallow -f
       - name: conda setup

.github/workflows/test.yaml

@@ -38,14 +38,8 @@ jobs:
       fail-fast: false
       matrix:
         os: ['ubuntu-latest', 'macos-latest', 'windows-latest']
-        python-version: ['3.7', '3.8', '3.11']
+        python-version: ['3.8', '3.11']
         bokeh-version: ['2', '3']
-        exclude:
-            # Bokeh 3 does not support Python 3.7
-          - bokeh-version: '3'
-            python-version: '3.7'
-          - bokeh-version: '2'
-            python-version: '3.8'
     timeout-minutes: 120
     defaults:
       run:

holoviews/core/data/ibis.py

@@ -12,13 +12,13 @@
 from .util import cached
 
 
-@lru_cache()
+@lru_cache
 def ibis_version():
     import ibis
     return Version(ibis.__version__)
 
 
-@lru_cache()
+@lru_cache
 def ibis4():
     return ibis_version() >= Version("4.0")
 

holoviews/plotting/util.py

@@ -557,8 +557,6 @@ def mplcmap_to_palette(cmap, ncolors=None, categorical=False):
             cmap = cmap.replace('Category', 'tab')
 
         if Version(mpl.__version__) < Version("3.5"):
-            # This will stop working and can be removed
-            # when we do not support python 3.7
             from matplotlib import cm
             try:
                 cmap = cm.get_cmap(cmap)

holoviews/tests/plotting/test_plotutils.py

@@ -481,7 +481,7 @@ def test_mpl_colormap_instance(self):
             cmap = colormaps.get('Greys')
         except ImportError:
             # This will stop working and can be removed
-            # when we do not support python 3.7
+            # when we only support Matplotlib >= 3.5
             from matplotlib.cm import get_cmap
             cmap = get_cmap('Greys')
 

pyproject.toml

@@ -32,7 +32,7 @@ filterwarnings = [
 run.concurrency = ["greenlet"]
 
 [tool.ruff]
-target-version = "py37"
+target-version = "py38"
 
 select = [
     "E",

setup.py

@@ -154,7 +154,7 @@ def get_setup_version(reponame):
     dict(
         name="holoviews",
         version=get_setup_version("holoviews"),
-        python_requires=">=3.7",
+        python_requires=">=3.8",
         install_requires=install_requires,
         extras_require=extras_require,
         description="Stop plotting your data - annotate your data and let it visualize itself.",
@@ -176,7 +176,6 @@ def get_setup_version(reponame):
         classifiers=[
             "License :: OSI Approved :: BSD License",
             "Development Status :: 5 - Production/Stable",
-            "Programming Language :: Python :: 3.7",
             "Programming Language :: Python :: 3.8",
             "Programming Language :: Python :: 3.9",
             "Programming Language :: Python :: 3.10",

tox.ini

@@ -3,7 +3,7 @@
 
 [tox]
 #          python version             test group                  extra envs  extra commands
-envlist = {py37,py38,py39,py310,py311}-{unit,ui,examples,all_recommended,simple}-{default}-{dev,pkg}
+envlist = {py38,py39,py310,py311}-{unit,ui,examples,all_recommended,simple}-{default}-{dev,pkg}
 
 [_simple]
 description = Install holoviews without any optional dependencies