maint(precommit): Apply isort (#3195)

* Apply isort

* Tweak isort config

* Add env.py as a known_first_party

* Add one missing known first party

* Make config compat with older isort versions

* Add another comment

* Revert pyproject setting

.pre-commit-config.yaml

@@ -35,6 +35,11 @@ repos:
   hooks:
   - id: pyupgrade
 
+- repo: https://github.com/PyCQA/isort
+  rev: 5.9.3
+  hooks:
+  - id: isort
+
 # Black, the code formatter, natively supports pre-commit
 - repo: https://github.com/psf/black
   rev: 21.7b0

docs/benchmark.py

 # -*- coding: utf-8 -*-
-import random
+import datetime as dt
 import os
+import random
 import time
-import datetime as dt
 
 nfns = 4  # Functions per class
 nargs = 4  # Arguments per function

docs/conf.py

@@ -13,12 +13,12 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
-import sys
 import os
+import re
 import shlex
 import subprocess
+import sys
 from pathlib import Path
-import re
 
 DIR = Path(__file__).parent.resolve()
 

noxfile.py

 import nox
 
-
 nox.options.sessions = ["lint", "tests", "tests_packaging"]
 
 

pybind11/__init__.py

 # -*- coding: utf-8 -*-
 
-from ._version import version_info, __version__
-from .commands import get_include, get_cmake_dir
-
+from ._version import __version__, version_info
+from .commands import get_cmake_dir, get_include
 
 __all__ = (
     "version_info",

pybind11/__main__.py

@@ -5,7 +5,7 @@ import argparse
 import sys
 import sysconfig
 
-from .commands import get_include, get_cmake_dir
+from .commands import get_cmake_dir, get_include
 
 
 def print_includes():

pybind11/_version.pyi

-from typing import Union, Tuple
+from typing import Tuple, Union
 
 def _to_int(s: str) -> Union[int, str]: ...
 

pybind11/commands.py

 # -*- coding: utf-8 -*-
 import os
 
-
 DIR = os.path.abspath(os.path.dirname(__file__))
 
 

pybind11/setup_helpers.py

@@ -41,23 +41,23 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 import contextlib
 import os
+import platform
 import shutil
 import sys
+import sysconfig
 import tempfile
 import threading
-import platform
 import warnings
-import sysconfig
 
 try:
-    from setuptools.command.build_ext import build_ext as _build_ext
     from setuptools import Extension as _Extension
+    from setuptools.command.build_ext import build_ext as _build_ext
 except ImportError:
     from distutils.command.build_ext import build_ext as _build_ext
     from distutils.extension import Extension as _Extension
 
-import distutils.errors
 import distutils.ccompiler
+import distutils.errors
 
 WIN = sys.platform.startswith("win32") and "mingw" not in sysconfig.get_platform()
 PY2 = sys.version_info[0] < 3

pybind11/setup_helpers.pyi

 # IMPORTANT: Should stay in sync with setup_helpers.py (mostly checked by CI /
 # pre-commit).
 
-from typing import Any, Callable, Dict, Iterator, List, Optional, Type, TypeVar, Union
-from types import TracebackType
-
+import contextlib
+import distutils.ccompiler
 from distutils.command.build_ext import build_ext as _build_ext  # type: ignore
 from distutils.extension import Extension as _Extension
-import distutils.ccompiler
-import contextlib
+from types import TracebackType
+from typing import Any, Callable, Dict, Iterator, List, Optional, Type, TypeVar, Union
 
 WIN: bool
 PY2: bool

pyproject.toml

@@ -15,6 +15,12 @@ ignore = [
     "noxfile.py",
 ]
 
+[tool.isort]
+# Needs the compiled .so modules and env.py from tests
+known_first_party = "env,pybind11_cross_module_tests,pybind11_tests,"
+# For black compatibility
+profile = "black"
+
 [tool.mypy]
 files = "pybind11"
 python_version = "2.7"

setup.py

@@ -4,6 +4,7 @@
 # Setup script for PyPI; use CMakeFile.txt to build extension modules
 
 import contextlib
+import io
 import os
 import re
 import shutil
@@ -11,7 +12,6 @@ import string
 import subprocess
 import sys
 import tempfile
-import io
 
 import setuptools.command.sdist
 

tests/extra_setuptools/test_setuphelper.py

 # -*- coding: utf-8 -*-
 import os
-import sys
 import subprocess
+import sys
 from textwrap import dedent
 
 import pytest

tests/test_buffers.py

 # -*- coding: utf-8 -*-
+import ctypes
 import io
 import struct
-import ctypes
 
 import pytest
 
 import env  # noqa: F401
-
-from pybind11_tests import buffers as m
 from pybind11_tests import ConstructorStats
+from pybind11_tests import buffers as m
 
 np = pytest.importorskip("numpy")
 

tests/test_builtin_casters.py

@@ -2,9 +2,8 @@
 import pytest
 
 import env  # noqa: F401
-
+from pybind11_tests import IncType, UserType
 from pybind11_tests import builtin_casters as m
-from pybind11_tests import UserType, IncType
 
 
 def test_simple_string():

tests/test_call_policies.py

@@ -2,9 +2,8 @@
 import pytest
 
 import env  # noqa: F401
-
-from pybind11_tests import call_policies as m
 from pybind11_tests import ConstructorStats
+from pybind11_tests import call_policies as m
 
 
 @pytest.mark.xfail("env.PYPY", reason="sometimes comes out 1 off on PyPy", strict=False)

tests/test_callbacks.py

 # -*- coding: utf-8 -*-
-import pytest
-from pybind11_tests import callbacks as m
-from threading import Thread
 import time
+from threading import Thread
+
+import pytest
+
 import env  # NOQA: F401
+from pybind11_tests import callbacks as m
 
 
 def test_callbacks():

tests/test_chrono.py

 # -*- coding: utf-8 -*-
-from pybind11_tests import chrono as m
 import datetime
+
 import pytest
 
 import env  # noqa: F401
+from pybind11_tests import chrono as m
 
 
 def test_chrono_system_clock():

tests/test_class.py

@@ -2,9 +2,8 @@
 import pytest
 
 import env  # noqa: F401
-
+from pybind11_tests import ConstructorStats, UserType
 from pybind11_tests import class_ as m
-from pybind11_tests import UserType, ConstructorStats
 
 
 def test_repr():

tests/test_cmake_build/test.py

 # -*- coding: utf-8 -*-
 import sys
+
 import test_cmake_build
 
 assert test_cmake_build.add(1, 2) == 3