CI: Drop Python 3.7 testing (#20)

Python 3.7 has had no security support since 2023 June.

Fixes CI: 3.7 is no longer supported in latest GitHub Actions Ubuntu
images:
https://github.com/intgr/dogslow-sentry/actions/runs/12768757352/job/35589792433

.github/workflows/tests.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
 
     steps:
     - uses: actions/checkout@v4

README.rst

@@ -14,7 +14,7 @@ Overview
 --------
 
 Dogslow is a Django watchdog middleware that logs tracebacks of slow
-requests. Dogslow-sentry requires Python 3.7+, Django 2.2+.
+requests. Dogslow-sentry requires Python 3.8+, Django 2.2+.
 
 It started as an `internal project inside Bitbucket`_ to help trace
 operational problems.
@@ -87,6 +87,10 @@ therefore safe to use in production.
 Changelog
 ---------
 
+Unreleased
+
+* Dropped Python 3.7 support, now requires Python 3.8+.
+
 2.0.1 (2023-12-08)
 
 * Use ISO 8601-like YYYY-MM-DD date format for email/file logging.

dogslow_sentry/__init__.py

@@ -108,7 +108,6 @@ def frames_to_traceback(
     tb = None
     while frame is not None:
         # No point to trace further than the middleware itself
-        # Note: TracebackType() constructor requires Python >= 3.7
         tb = TracebackType(tb, frame, frame.f_lasti, frame.f_lineno)
         if (
             frame.f_code.co_filename == until_file

setup.py

@@ -14,7 +14,7 @@ def long_description():
 setup(
     author="Marti Raudsepp",
     author_email="[email protected]",
-    python_requires=">=3.7",
+    python_requires=">=3.8",
     classifiers=[
         "Development Status :: 6 - Mature",
         "Framework :: Django",
@@ -33,7 +33,6 @@ def long_description():
         ),
         "Natural Language :: English",
         "Operating System :: OS Independent",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",

tox.ini

@@ -1,10 +1,12 @@
 [tox]
 # NB! Don't forget to update `.github/workflows/tests.yml`
-envlist = py{37,38,39,310,311}-dj{22,30,32},py{38,39,310,311,312}-dj{40,41,42},py{310,311,312}-dj50
+envlist =
+    py{38,39,310,311}-dj{22,30,32}
+    py{38,39,310,311,312}-dj{40,41,42}
+    py{310,311,312}-dj50
 
 [gh-actions]
 python =
-    3.7: py37-dj{22,30,32}
     3.8: py38-dj{22,30,32,40,41,42}
     3.9: py39-dj{22,30,32,40,41,42}
     3.10: py310-dj{22,30,32,40,41,42,50}