Update continuous integration workflows to use Python 3.10

Python 3.10 has been released on 7 October 2021, see changelog
at https://docs.python.org/3.10/whatsnew/3.10.html. Updating all
the GitHub Actions continuous integration workflows that used
Python 3.9 to use Python 3.10 now. Also updated setup.py to
include Python 3.10 classifier.

Author: weiji14

.github/workflows/ci_docs.yml

@@ -25,12 +25,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.9]
+        python-version: [3.10]
         os: [ubuntu-latest, macOS-latest, windows-latest]
         # Is it a draft Pull Request (true or false)?
         isDraft:
           - ${{ github.event.pull_request.draft }}
-        # Only run one job (Ubuntu + Python 3.9) for draft PRs
+        # Only run one job (Ubuntu + Python 3.10) for draft PRs
         exclude:
           - os: macOS-latest
             isDraft: true

.github/workflows/ci_tests.yaml

@@ -30,12 +30,12 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.7, 3.9]
+        python-version: [3.7, 3.10]
         os: [ubuntu-latest, macOS-latest, windows-latest]
         # Is it a draft Pull Request (true or false)?
         isDraft:
           - ${{ github.event.pull_request.draft }}
-        # Only run one job (Ubuntu + Python 3.9) for draft PRs
+        # Only run one job (Ubuntu + Python 3.10) for draft PRs
         exclude:
           - os: macOS-latest
             isDraft: true
@@ -44,13 +44,13 @@ jobs:
           # - os: ubuntu-latest
           #   python-version: 3.7
           #   isDraft: true
-        # Pair Python 3.7 with NumPy 1.18 and Python 3.9 with NumPy 1.21
-        # Only install optional packages on Python 3.9/NumPy 1.21
+        # Pair Python 3.7 with NumPy 1.18 and Python 3.10 with NumPy 1.21
+        # Only install optional packages on Python 3.10/NumPy 1.21
         include:
-          - python-version: 3.7
+          - python-version: '3.7'
             numpy-version: '1.18'
             optional-packages: ''
-          - python-version: 3.9
+          - python-version: '3.10'
             numpy-version: '1.21'
             optional-packages: 'geopandas ipython'
     defaults:

.github/workflows/ci_tests_dev.yaml

@@ -29,7 +29,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.9]
+        python-version: [3.10]
         os: [ubuntu-latest, macOS-11.0, windows-latest]
         gmt_git_ref: [master]
     defaults:

.github/workflows/publish-to-pypi.yml

@@ -31,7 +31,7 @@ jobs:
     - name: Set up Python
       uses: actions/[email protected]
       with:
-        python-version: 3.9
+        python-version: 3.10
 
     - name: Install dependencies
       run: python -m pip install setuptools wheel

.github/workflows/style_checks.yaml

@@ -22,7 +22,7 @@ jobs:
       - name: Set up Python
         uses: actions/[email protected]
         with:
-          python-version: 3.9
+          python-version: 3.10
 
       - name: Install packages
         run: |

doc/install.rst

@@ -109,7 +109,7 @@ Now we can create a new conda environment with Python and all our dependencies
 installed (we'll call it ``pygmt`` but feel free to change it to whatever you
 want)::
 
-    conda create --name pygmt python=3.9 numpy pandas xarray netcdf4 packaging gmt
+    conda create --name pygmt python=3.10 numpy pandas xarray netcdf4 packaging gmt
 
 Activate the environment by running the following (**do not forget this step!**)::
 

setup.py

@@ -21,7 +21,7 @@
 PACKAGE_DATA = {"pygmt.tests": ["data/*", "baseline/*"]}
 
 CLASSIFIERS = [
-    "Development Status :: 3 - Alpha",
+    "Development Status :: 4 - Beta",
     "Intended Audience :: Science/Research",
     "Intended Audience :: Developers",
     "Intended Audience :: Education",
@@ -30,6 +30,7 @@
     "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
     f"License :: OSI Approved :: {LICENSE}",
 ]
 PLATFORMS = "Any"