tweaking tests

.github/workflows/python-package.yml

@@ -19,11 +19,11 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-latest] # Add more os?
-        python-version: [3.8, 3.9]
+        python-version: ['3.8', '3.9']
         astropy-version: ['<5.0', '<5.1']
         numpy-version: ['<1.20', '<1.21', '<1.22']
         scipy-version: ['<1.6', '<1.7']
-        matplotlib-version: ['<3.4', '<3.5']
+        matplotlib-version: ['<3.3'] # '<3.4', '<3.5']
 
     steps:
       - name: Checkout code
@@ -70,8 +70,8 @@ jobs:
       - name: Install Python dependencies
         run: |
           python -m pip install --upgrade pip wheel setuptools
-          python -m pip install pytest pytest-astropy coveralls
-          python -m pip install pyyaml numpy\<1.21 scipy\<1.6 matplotlib\<3.3 astropy\<5.0
+          python -m pip install pytest pytest-astropy pyyaml coveralls
+          python -m pip install numpy\<1.21 scipy\<1.6 matplotlib\<3.3 astropy\<5.0
 
       - name: Run the test with coverage
         run: pytest --cov
@@ -105,7 +105,7 @@ jobs:
         - name: Install Python dependencies
           run: |
             python -m pip install --upgrade pip wheel setuptools Sphinx\<8
-            python -m pip install sphinx-astropy
+            python -m pip install -e .[docs]
 
         - name: Test the documentation
           run: sphinx-build -W --keep-going -b html docs docs/_build/html

docs/conf.py

@@ -28,6 +28,7 @@
 import datetime
 import os
 import sys
+from importlib import import_module
 
 try:
     import astropy_helpers
@@ -84,7 +85,7 @@
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 
-__import__(setup_cfg['package_name'])
+import_module(setup_cfg['package_name'])
 package = sys.modules[setup_cfg['package_name']]
 
 # The short X.Y version.