Drop Python 3.10 support

.codecov.yml

@@ -13,4 +13,4 @@ codecov:
   notify:
     # Wait on all test jobs so Github merge queue doesn't remove PRs from the queue due to codecov
     # eagerly reporting the status
-    after_n_builds: 36
+    after_n_builds: 30

.deepsource.toml

@@ -4,7 +4,6 @@ test_patterns = ["tests/**"]
 exclude_patterns = [
   "tests/**",
   "scripts/**",
-  "isort/_vendored/**",
 ]
 
 

.github/workflows/continuous-integration.yml

@@ -50,7 +50,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
+        python-version: ["3.11", "3.12", "3.13", "3.14", "3.15"]
         os: [ubuntu-latest, macos-latest, windows-latest]
         compiled: [true, false]
     runs-on: ${{ matrix.os }}

README.md

@@ -24,7 +24,7 @@ isort is a Python utility / library to sort imports alphabetically and
 automatically separate into sections and by type. It provides a command line
 utility, Python library and [plugins for various
 editors](https://github.com/pycqa/isort/wiki/isort-Plugins) to
-quickly sort all your imports. It requires Python 3.10+ to run but
+quickly sort all your imports. It requires Python 3.11+ to run but
 supports formatting Python 2 code too.
 
 - [Try isort now from your browser!](docs/quick_start/0.-try.md)

docs/contributing/1.-contributing-guide.md

@@ -14,7 +14,7 @@ Account Requirements:
 
 Base System Requirements:
 
-- Python3.10+
+- Python3.11+
 - uv
 - bash or a bash compatible shell (should be auto-installed on Linux / Mac)
   - WSL users running Ubuntu may need to install Python's venv module even after installing Python.
@@ -78,4 +78,3 @@ I can not tell you how thankful I am for the hard work done by isort contributor
 Thank you!
 
 ~Timothy Crosley
-

example_isort_formatting_plugin/pyproject.toml

@@ -4,7 +4,7 @@ version = "0.1.1"
 description = "An example plugin that modifies isort formatting using black."
 authors = [{name = "Timothy Crosley", email = "timothy.crosley@gmail.com"}, {name = "staticdev", email = "staticdev-support@proton.me"}]
 license = "MIT"
-requires-python = ">=3.10.0"
+requires-python = ">=3.11.0"
 dependencies = [
     "isort>=5.13.2",
     "black>=24.3.0",

example_isort_sorting_plugin/pyproject.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 description = "An example plugin that modifies isorts sorting order to provide an even more natural sort by utilizing natsort."
 authors = [{name = "Timothy Crosley", email = "timothy.crosley@gmail.com"}, {name = "staticdev", email = "staticdev-support@proton.me"}]
 license = "MIT"
-requires-python = ">=3.10.0"
+requires-python = ">=3.11.0"
 dependencies = [
     "natsort>=7.1.1"
 ]

example_shared_isort_profile/pyproject.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 description = "An example shared isort profile"
 authors = [{name = "Timothy Crosley", email = "timothy.crosley@gmail.com"}, {name = "staticdev", email = "staticdev-support@proton.me"}]
 license = "MIT"
-requires-python = ">=3.10.0"
+requires-python = ">=3.11.0"
 
 [project.entry-points."isort.profiles"]
 example = "example_shared_isort_profile:PROFILE"

isort/_parse_utils.py

@@ -2,7 +2,8 @@
 
 import re
 from collections.abc import Callable
-from typing import Literal, NamedTuple
+from enum import StrEnum
+from typing import NamedTuple
 
 from .settings import Config
 
@@ -165,21 +166,25 @@ def normalize_from_import_string(import_string: str) -> str:
     )
 
 
-# TODO: Return a `StrEnum` once we no longer support Python 3.10.
-def import_type(
-    line: str, config: Config
-) -> Literal["from", "straight", "lazy_from", "lazy_straight"] | None:
+class _ImportType(StrEnum):
+    FROM = "from"
+    STRAIGHT = "straight"
+    LAZY_FROM = "lazy_from"
+    LAZY_STRAIGHT = "lazy_straight"
+
+
+def import_type(line: str, config: Config) -> _ImportType | None:
     """If the current line is an import line it will return its type."""
     if config.honor_noqa and line.lower().rstrip().endswith("noqa"):
         return None
     if "isort:skip" in line or "isort: skip" in line or "isort: split" in line:
         return None
     if line.startswith(("import ", "cimport ")):
-        return "straight"
+        return _ImportType.STRAIGHT
     if line.startswith("from "):
-        return "from"
+        return _ImportType.FROM
     if line.startswith("lazy import "):
-        return "lazy_straight"
+        return _ImportType.LAZY_STRAIGHT
     if line.startswith("lazy from "):
-        return "lazy_from"
+        return _ImportType.LAZY_FROM
     return None