Remove Python version 3.8

.github/workflows/publish.yml

@@ -22,7 +22,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
-        python-version: 3.8
+        python-version: 3.9
 
     - name: Install build tools
       run: |

.github/workflows/pytest-remote-data.yml

@@ -56,10 +56,10 @@ jobs:
     strategy:
       fail-fast: false  # don't cancel other matrix jobs when one fails
       matrix:
-        python-version: [3.8, 3.9, "3.10", "3.11", "3.12"]
+        python-version: [3.9, "3.10", "3.11", "3.12"]
         suffix: ['']  # the alternative to "-min"
         include:
-          - python-version: 3.8
+          - python-version: 3.9
             suffix: -min
 
     runs-on: ubuntu-latest
@@ -103,7 +103,7 @@ jobs:
         run: pytest pvlib/tests/iotools --cov=./ --cov-report=xml --remote-data
 
       - name: Upload coverage to Codecov
-        if: matrix.python-version == 3.8 && matrix.suffix == ''
+        if: matrix.python-version == 3.9 && matrix.suffix == ''
         uses: codecov/codecov-action@v4
         with:
           fail_ci_if_error: true

.github/workflows/pytest.yml

@@ -12,12 +12,12 @@ jobs:
       fail-fast: false  # don't cancel other matrix jobs when one fails
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.8, 3.9, "3.10", "3.11", "3.12"]
+        python-version: [3.9, "3.10", "3.11", "3.12"]
         environment-type: [conda, bare]
         suffix: ['']  # placeholder as an alternative to "-min"
         include:
           - os: ubuntu-latest
-            python-version: 3.8
+            python-version: 3.9
             environment-type: conda
             suffix: -min
         exclude:
@@ -82,7 +82,7 @@ jobs:
           pytest pvlib --cov=./ --cov-report=xml --ignore=pvlib/tests/iotools
 
       - name: Upload coverage to Codecov
-        if: matrix.python-version == 3.8 && matrix.suffix == '' && matrix.os == 'ubuntu-latest' && matrix.environment-type == 'conda'
+        if: matrix.python-version == 3.9 && matrix.suffix == '' && matrix.os == 'ubuntu-latest' && matrix.environment-type == 'conda'
         uses: codecov/codecov-action@v4
         with:
           fail_ci_if_error: true

benchmarks/asv.conf.json

@@ -113,19 +113,19 @@
     "include": [
         // minimum supported versions
         {
-            "python": "3.8",
+            "python": "3.9",
             "build": "",
-            "numpy": "1.17.5",
+            "numpy": "1.19.5",
             "pandas": "1.3.0",
             "scipy": "1.6.0",
             // Note: these don't have a minimum in setup.py
             "h5py": "3.1.0",
-            "ephem": "3.7.7.0",  // first version to support py 3.8
-            "numba": "0.47.0",  // first version to support py 3.8
+            "ephem": "4.0.0.1",  // first version to support py 3.9
+            "numba": "0.53.0",  // first version to support py 3.9
         },
         // latest versions available
         {
-            "python": "3.8",
+            "python": "3.9",
             "build": "",
             "numpy": "",
             "pandas": "",

ci/requirements-py3.8-min.yml → ci/requirements-py3.9-min.yml

@@ -8,14 +8,14 @@ dependencies:
     - pytest-cov
     - pytest-mock
     - pytest-timeout
-    - python=3.8
+    - python=3.9
     - pytz
     - requests
     - pip:
         - dataclasses
-        - h5py==2.10.0  # chosen for compatibility with numpy 1.17.3 and py3.8
-        - numpy==1.17.3
-        - pandas==1.3.0
+        - h5py==3.0.0
+        - numpy==1.19.3
+        - pandas==1.3.0  # min version of pvlib
         - scipy==1.6.0
         - pytest-rerunfailures # conda version is >3.6
         - pytest-remotedata # conda package is 0.3.0, needs > 0.3.1

docs/sphinx/source/whatsnew/v0.11.1.rst

@@ -79,7 +79,8 @@ Documentation
 
 Requirements
 ~~~~~~~~~~~~
-
+* Python 3.9 or greater. (:pull:`2213`)
+* Minimum numpy version increased to v1.19.3. (:pull:`2213`)
 
 Contributors
 ~~~~~~~~~~~~
@@ -98,4 +99,5 @@ Contributors
 * Marcos R. Escudero (:ghuser:`marc-resc`)
 * Bernat Nicolau (:ghuser:`BernatNicolau`)
 * Eduardo Sarquis (:ghuser:`EduardoSarquis`)
-* Andrew B Godbehere (:ghuser:`agodbehere`)
+* Adam R. Jensen (:ghuser:`AdamRJensen`)
+* Andrew B Godbehere (:ghuser:`agodbehere`)

pyproject.toml

@@ -9,9 +9,9 @@ description = "A set of functions and classes for simulating the performance of
 authors = [
     { name = "pvlib python Developers", email = "[email protected]" },
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 dependencies = [
-    'numpy >= 1.17.3',
+    'numpy >= 1.19.3',
     'pandas >= 1.3.0',
     'pytz',
     'requests',