Drop Python 3.7 support (#516)

.github/workflows/main.yml

@@ -18,7 +18,6 @@ jobs:
     strategy:
       matrix:
         python-version:
-        - 3.7
         - 3.8
         - 3.9
         - '3.10'

.pre-commit-config.yaml

@@ -39,7 +39,7 @@ repos:
   rev: v3.7.0
   hooks:
   - id: pyupgrade
-    args: [--py37-plus]
+    args: [--py38-plus]
 - repo: https://github.com/psf/black
   rev: 23.3.0
   hooks:
@@ -55,7 +55,7 @@ repos:
   hooks:
   - id: reorder-python-imports
     args:
-    - --py37-plus
+    - --py38-plus
     - --application-directories
     - .:example:src
     - --add-import

CHANGELOG.rst

@@ -2,6 +2,8 @@
 Changelog
 =========
 
+* Drop Python 3.7 support.
+
 3.13.0 (2023-06-15)
 -------------------
 

README.rst

@@ -20,7 +20,7 @@ A `flake8 <https://flake8.readthedocs.io/en/latest/index.html>`_ plugin that hel
 Requirements
 ============
 
-Python 3.7 to 3.12 supported.
+Python 3.8 to 3.12 supported.
 
 Installation
 ============

pyproject.toml

@@ -5,7 +5,7 @@ requires = [
 ]
 
 [tool.black]
-target-version = ['py37']
+target-version = ['py38']
 
 [tool.pytest.ini_options]
 addopts = """\

requirements/compile.py

@@ -17,11 +17,6 @@
         "--generate-hashes",
         "--allow-unsafe",
     ] + sys.argv[1:]
-    subprocess.run(
-        ["python3.7", *common_args, "-o", "py37.txt"],
-        check=True,
-        capture_output=True,
-    )
     subprocess.run(
         ["python3.8", *common_args, "-o", "py38.txt"],
         check=True,

setup.cfg

@@ -17,7 +17,6 @@ classifiers =
     Natural Language :: English
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3 :: Only
-    Programming Language :: Python :: 3.7
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
@@ -34,8 +33,7 @@ project_urls =
 packages = find:
 install_requires =
     flake8!=3.2.0,>=3.0
-    importlib-metadata;python_version < "3.8"
-python_requires = >=3.7
+python_requires = >=3.8
 include_package_data = True
 package_dir =
     =src

src/flake8_comprehensions/__init__.py

@@ -1,15 +1,10 @@
 from __future__ import annotations
 
 import ast
-import sys
+from importlib.metadata import version
 from typing import Any
 from typing import Generator
 
-if sys.version_info >= (3, 8):
-    from importlib.metadata import version
-else:
-    from importlib_metadata import version
-
 
 class ComprehensionChecker:
     """

tests/test_flake8_comprehensions.py

@@ -1,16 +1,11 @@
 from __future__ import annotations
 
 import re
-import sys
+from importlib.metadata import version
 from textwrap import dedent
 
 import pytest
 
-if sys.version_info >= (3, 8):
-    from importlib.metadata import version
-else:
-    from importlib_metadata import version
-
 
 @pytest.fixture
 def flake8_path(flake8_path):
@@ -791,14 +786,6 @@ def test_C416_pass(code, flake8_path):
     assert result.out_lines == []
 
 
-# Column offset for list comprehensions was incorrect in Python < 3.8.
-# See https://bugs.python.org/issue31241 for details.
-if sys.version_info >= (3, 8):
-    list_comp_col_offset = 0
-else:
-    list_comp_col_offset = 1
-
-
 @pytest.mark.parametrize(
     "code,failures",
     [
@@ -819,7 +806,7 @@ def test_C416_pass(code, flake8_path):
         (
             "[x for x in range(5)]",
             [
-                f"./example.py:1:{1 + list_comp_col_offset}: C416 Unnecessary "
+                "./example.py:1:1: C416 Unnecessary "
                 + "list comprehension - rewrite using list()."
             ],
         ),

tox.ini

@@ -2,7 +2,7 @@
 requires =
     tox>=4.2
 env_list =
-    py{312, 311, 310, 39, 38, 37}
+    py{312, 311, 310, 39, 38}
 
 [testenv]
 package = wheel