Merge pull request #233 from goodboy/drop_py37

Drop py37

.github/workflows/ci.yml

@@ -24,13 +24,13 @@ jobs:
 
   testing:
     name: '${{ matrix.os }} Python ${{ matrix.python }} - ${{ matrix.spawn_backend }}'
-    timeout-minutes: 10
+    timeout-minutes: 9
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python: ['3.7', '3.8', '3.9']
+        python: ['3.8', '3.9']
         spawn_backend: ['trio', 'mp']
     steps:
       - name: Checkout

newsfragments/232.removal.rst

@@ -0,0 +1 @@
+Drop Python 3.7 support in preparation for supporting 3.9+ syntax.

setup.py

@@ -54,7 +54,7 @@ setup(
 
     ],
     tests_require=['pytest'],
-    python_requires=">=3.7",
+    python_requires=">=3.8",
     keywords=[
         'trio',
         "async",
@@ -71,7 +71,6 @@ setup(
         "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
         "Programming Language :: Python :: Implementation :: CPython",
         "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Intended Audience :: Science/Research",