Drop python 3.8 (#220)

* drop python 3.8

* update minimum dependency versions

* whatsnew

* fix pandas issue by bumping to 1.3.0

Author: kandersolar

.github/workflows/lint-and-test.yml

@@ -8,11 +8,11 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.8, 3.9, "3.10", "3.11", "3.12", "3.13"]
+        python-version: [3.9, "3.10", "3.11", "3.12", "3.13"]
         requirements: ['']
         include:
           - requirements: "-r requirements-min.txt"
-            python-version: 3.8
+            python-version: 3.9
             os: ubuntu-latest
 
     runs-on: ${{ matrix.os }}
@@ -48,10 +48,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Set up Python 3.8
+      - name: Set up Python 3.9
         uses: actions/setup-python@v1
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Finish Coveralls Upload
         run: |
           pip install --upgrade pip
@@ -64,7 +64,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [3.8]
+        python-version: [3.9]
 
     runs-on: ubuntu-latest
 

.readthedocs.yml

@@ -3,7 +3,7 @@ version: 2
 build:
   os: "ubuntu-22.04"
   tools:
-    python: "3.7"
+    python: "3.9"
 
 sphinx:
   configuration: docs/conf.py

docs/whatsnew/v0.2.3.rst

@@ -15,6 +15,12 @@ Bug Fixes
 
 Requirements
 ~~~~~~~~~~~~
+* Advance minimum python to 3.8, and the following dependencies (:pull:`220`):
+
+  - numpy: 1.20.0
+  - pandas: 1.3.0
+  - statsmodels: 0.13.0
+  - scikit-image: 0.18.0
 
 
 Documentation

requirements-min.txt

@@ -1,6 +1,6 @@
-numpy~=1.17.0
-pandas~=1.0.0
+numpy~=1.20.0
+pandas~=1.3.0
 pvlib~=0.9.4
 scipy~=1.6.0
-statsmodels~=0.10.0
-scikit-image~=0.16.0
+statsmodels~=0.13.0
+scikit-image~=0.18.0

setup.py

@@ -33,12 +33,12 @@
 ]
 
 INSTALL_REQUIRES = [
-    'numpy >= 1.17.0',
-    'pandas >= 1.0.0, != 1.1.*',
+    'numpy >= 1.20.0',
+    'pandas >= 1.3.0',
     'pvlib >= 0.9.4',
     'scipy >= 1.6.0',
-    'statsmodels >= 0.10.0',
-    'scikit-image >= 0.16.0',
+    'statsmodels >= 0.13.0',
+    'scikit-image >= 0.18.0',
     'importlib-metadata; python_version < "3.8"',
 ]