ci: support only python >= 3.8 (#24)

.github/workflows/tests.yml

@@ -17,11 +17,9 @@ jobs:
           - { python: "3.10", os: "ubuntu-latest", session: "mypy" }
           - { python: "3.9", os: "ubuntu-latest", session: "mypy" }
           - { python: "3.8", os: "ubuntu-latest", session: "mypy" }
-          - { python: "3.7", os: "ubuntu-latest", session: "mypy" }
           - { python: "3.10", os: "ubuntu-latest", session: "tests" }
           - { python: "3.9", os: "ubuntu-latest", session: "tests" }
           - { python: "3.8", os: "ubuntu-latest", session: "tests" }
-          - { python: "3.7", os: "ubuntu-latest", session: "tests" }
           - { python: "3.10", os: "windows-latest", session: "tests" }
           - { python: "3.10", os: "macos-latest", session: "tests" }
           - { python: "3.10", os: "ubuntu-latest", session: "typeguard" }
@@ -74,13 +72,15 @@ jobs:
         run: |
           import hashlib
           import sys
+          import os
 
           python = "py{}.{}".format(*sys.version_info[:2])
           payload = sys.version.encode() + sys.executable.encode()
           digest = hashlib.sha256(payload).hexdigest()
           result = "${{ runner.os }}-{}-{}-pre-commit".format(python, digest[:8])
 
-          print("::set-output name=result::{}".format(result))
+          with open(os.environ["GITHUB_OUTPUT"], mode="a") as io:
+              print(f"result={result}", file=io)
 
       - name: Restore pre-commit cache
         uses: actions/cache@v3

CONTRIBUTING.md

@@ -37,7 +37,7 @@ Request features on the [Issue Tracker].
 
 ## How to set up your development environment
 
-You need Python 3.7+ and the following tools:
+You need Python 3.8+ and the following tools:
 
 - [Poetry]
 - [Nox]

noxfile.py

@@ -21,7 +21,7 @@
 
 
 package = "inductance"
-python_versions = ["3.10", "3.9", "3.8", "3.7"]
+python_versions = ["3.10", "3.9", "3.8"]
 nox.needs_version = ">= 2021.6.6"
 nox.options.sessions = (
     "pre-commit",