Drop python 3.8, support python 3.11 (#343)

Author: dnerini

.github/workflows/check_black.yml

@@ -22,10 +22,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v3
-      - name: Set up Python 3.8
+      - name: Set up Python 3.9
         uses: actions/setup-python@v4
         with:
-          python-version: 3.8
+          python-version: 3.9
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip

.github/workflows/test_pysteps.yml

@@ -20,7 +20,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ "ubuntu-latest", "macos-latest", "windows-latest" ]
-        python-version: ["3.8", "3.10"]
+        python-version: ["3.9", "3.11"]
       max-parallel: 6
 
     defaults:

.readthedocs.yml

@@ -7,7 +7,7 @@ version: 2
 build:
   os: "ubuntu-22.04"
   tools:
-    python: "3.8"
+    python: "3.10"
 
 sphinx:
   configuration: doc/source/conf.py

ci/ci_test_env.yml

@@ -4,7 +4,7 @@ channels:
   - conda-forge
   - defaults
 dependencies:
-  - python>=3.7
+  - python>=3.9
   - pip
   - mamba
   # Minimal dependencies

doc/source/user_guide/install_pysteps.rst

@@ -8,7 +8,7 @@ Dependencies
 
 The pysteps package needs the following dependencies
 
-* `python >=3.8, <3.11 <http://www.python.org/>`_ (lower or higher versions may work but are not tested).
+* `python >=3.9, <3.12 <http://www.python.org/>`_ (lower or higher versions may work but are not tested).
 * `jsonschema <https://pypi.org/project/jsonschema/>`_
 * `matplotlib <http://matplotlib.org/>`_
 * `netCDF4 <https://pypi.org/project/netCDF4/>`_

environment.yml

@@ -3,7 +3,7 @@ channels:
 - conda-forge
 - defaults
 dependencies:
-  - python>=3.7
+  - python>=3.9
   - jsmin
   - jsonschema
   - matplotlib

environment_dev.yml

@@ -4,7 +4,7 @@ channels:
   - conda-forge
   - defaults
 dependencies:
-  - python>=3.7
+  - python>=3.9
   - pip
   - jsmin
   - jsonschema

requirements_dev.txt

@@ -1,5 +1,5 @@
 # Base dependencies
-python>=3.7
+python>=3.9
 numpy
 opencv-python
 pillow

setup.py

@@ -94,9 +94,9 @@
         "Topic :: Scientific/Engineering :: Hydrology",
         "License :: OSI Approved :: BSD License",
         "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
         "Operating System :: OS Independent",
     ],
     ext_modules=external_modules,