DEP: Minimum supported Python version 3.8

.github/workflows/build_docs.yaml

@@ -19,15 +19,15 @@ jobs:
       - name: Setup Conda
         uses: s-weigand/setup-conda@v1
         with:
-          python-version: 3.8
+          python-version: 3.9
           conda-channels: conda-forge
 
       - name: Install and Build
         shell: bash
         run: |
           conda config --prepend channels conda-forge
           conda config --set channel_priority strict
-          conda create -n docs python=3.8 cython proj
+          conda create -n docs python=3.9 cython proj
           source activate docs
           python -m pip install -e . --no-use-pep517 || python -m pip install -e .
           python -m pip install -r requirements-docs.txt

.github/workflows/test_proj_latest.yaml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
         with:
-            python-version: 3.7
+            python-version: 3.9
       - name: Install PROJ
         shell: bash
         run: |

.github/workflows/tests.yaml

@@ -30,14 +30,14 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: [3.7, 3.8, 3.9]
+        python-version: [3.8, 3.9, '3.10']
         python-implementation: [python]
         proj-version: ['*']
         env:
           - PYPROJ_FULL_COVERAGE: YES
         include:
           - os: ubuntu-latest
-            python-version: 3.7
+            python-version: 3.8
             python-implementation: python
             proj-version: 7.2
           - os: ubuntu-latest

docs/history.rst

@@ -3,6 +3,7 @@ Change Log
 
 Latest
 -------
+- DEP: Minimum supported Python version 3.8 (issue #930)
 - BUG: Prepend "Derived" to CRS type name if CRS is derived (issue #932)
 - BUG: Improved handling of inf values in :attr:`pyproj.transformer.Transformer.transform_bounds` (pull #961)
 - ENH: Add support for transforming bounds at the poles in :attr:`pyproj.transformer.Transformer.transform_bounds` (pull #962)

docs/index.rst

@@ -7,7 +7,7 @@ GitHub Repository: https://github.com/pyproj4/pyproj
 
 .. note:: Minimum supported PROJ version is 7.2.0
 
-.. note:: Minimum supported Python version is 3.7
+.. note:: Minimum supported Python version is 3.8
 
 .. note:: pyproj 3 wheels do not include transformation grids.
           For migration assistance see: :ref:`transformation_grids`

pyproj/__init__.py

@@ -4,7 +4,7 @@
 
 Download: http://python.org/pypi/pyproj
 
-Requirements: Python 3.7+.
+Requirements: Python 3.8+.
 
 Contact:  Jeffrey Whitaker <jeffrey.s.whitaker@noaa.gov>
 

setup.cfg

@@ -15,9 +15,9 @@ classifiers =
     License :: OSI Approved :: MIT License
     Operating System :: OS Independent
     Programming Language :: Python
-    Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3 :: Only
     Topic :: Scientific/Engineering
     Topic :: Scientific/Engineering :: GIS
@@ -35,7 +35,7 @@ project_urls =
 [options]
 zip_safe = False # https://mypy.readthedocs.io/en/stable/installed_packages.html
 packages = pyproj,pyproj.crs
-python_requires = >=3.7
+python_requires = >=3.8
 install_requires =
     certifi