Revert "[BE][Easy] use pathlib.Path instead of dirname / ".." / pardir (#129374)"

This reverts commit 0314c4c101c44d5d89b4fad9d37a012dc6f31128.

Reverted https://github.com/pytorch/pytorch/pull/129374 on behalf of https://github.com/huydhn due to Sorry for reverting your change but it causes lots of internal build failures where they fail to find hipify module ([comment](https://github.com/pytorch/pytorch/pull/129374#issuecomment-2192437052))

.circleci/codegen_validation/normalize_yaml_fragment.py

@@ -5,9 +5,8 @@ import sys
 
 import yaml
 
-
 # Need to import modules that lie on an upward-relative path
-sys.path.append(os.path.dirname(sys.path[0]))
+sys.path.append(os.path.join(sys.path[0], ".."))
 
 import cimodel.lib.miniyaml as miniyaml
 

.github/scripts/delete_old_branches.py

@@ -9,7 +9,6 @@ from typing import Any, Callable, Dict, List, Set
 from github_utils import gh_fetch_json_dict, gh_graphql
 from gitutils import GitRepo
 
-
 SEC_IN_DAY = 24 * 60 * 60
 CLOSED_PR_RETENTION = 30 * SEC_IN_DAY
 NO_PR_RETENTION = 1.5 * 365 * SEC_IN_DAY
@@ -22,7 +21,7 @@ TOKEN = os.environ["GITHUB_TOKEN"]
 if not TOKEN:
     raise Exception("GITHUB_TOKEN is not set")  # noqa: TRY002
 
-REPO_ROOT = Path(__file__).parents[2]
+REPO_ROOT = Path(__file__).parent.parent.parent
 
 # Query for all PRs instead of just closed/merged because it's faster
 GRAPHQL_ALL_PRS_BY_UPDATED_AT = """

.github/scripts/ensure_actions_will_cancel.py

@@ -1,12 +1,13 @@
 #!/usr/bin/env python3
 
 import sys
+
 from pathlib import Path
 
 import yaml
 
 
-REPO_ROOT = Path(__file__).resolve().parents[2]
+REPO_ROOT = Path(__file__).resolve().parent.parent.parent
 WORKFLOWS = REPO_ROOT / ".github" / "workflows"
 EXPECTED_GROUP_PREFIX = (
     "${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}"

.github/scripts/generate_binary_build_matrix.py

@@ -13,7 +13,6 @@ architectures:
 import os
 from typing import Dict, List, Optional, Tuple
 
-
 CUDA_ARCHES = ["11.8", "12.1", "12.4"]
 
 
@@ -86,7 +85,7 @@ def get_nccl_submodule_version() -> str:
     from pathlib import Path
 
     nccl_version_mk = (
-        Path(__file__).absolute().parents[2]
+        Path(__file__).absolute().parent.parent.parent
         / "third_party"
         / "nccl"
         / "nccl"

.github/scripts/gitutils.py

@@ -19,7 +19,6 @@ from typing import (
     Union,
 )
 
-
 T = TypeVar("T")
 
 RE_GITHUB_URL_MATCH = re.compile("^https://.*@?github.com/(.+)/(.+)$")
@@ -32,7 +31,7 @@ def get_git_remote_name() -> str:
 def get_git_repo_dir() -> str:
     from pathlib import Path
 
-    return os.getenv("GIT_REPO_DIR", str(Path(__file__).resolve().parents[2]))
+    return os.getenv("GIT_REPO_DIR", str(Path(__file__).resolve().parent.parent.parent))
 
 
 def fuzzy_list_to_dict(items: List[Tuple[str, str]]) -> Dict[str, List[str]]:

.github/scripts/lint_native_functions.py

@@ -26,7 +26,7 @@ def fn(base: str) -> str:
     return str(base / Path("aten/src/ATen/native/native_functions.yaml"))
 
 
-with open(Path(__file__).parents[2] / fn(".")) as f:
+with open(Path(__file__).parent.parent.parent / fn(".")) as f:
     contents = f.read()
 
 yaml = ruamel.yaml.YAML()  # type: ignore[attr-defined]

.github/scripts/test_gitutils.py

@@ -68,7 +68,7 @@ class TestRetriesDecorator(TestCase):
 
 class TestGitRepo(TestCase):
     def setUp(self) -> None:
-        repo_dir = BASE_DIR.absolute().parent.parent
+        repo_dir = BASE_DIR.parent.parent.absolute()
         if not (repo_dir / ".git").is_dir():
             raise SkipTest(
                 "Can't find git directory, make sure to run this test on real repo checkout"

benchmarks/dynamo/ci_expected_accuracy/cu124/update_expected.py

@@ -18,24 +18,23 @@ Known limitations:
 import argparse
 import json
 import os
+import pathlib
 import subprocess
 import sys
 import urllib
 from io import BytesIO
 from itertools import product
-from pathlib import Path
 from urllib.request import urlopen
 from zipfile import ZipFile
 
 import pandas as pd
 import requests
 
-
 # Note: the public query url targets this rockset lambda:
 # https://console.rockset.com/lambdas/details/commons.artifacts
 ARTIFACTS_QUERY_URL = "https://api.usw2a1.rockset.com/v1/public/shared_lambdas/4ca0033e-0117-41f5-b043-59cde19eff35"
 CSV_LINTER = str(
-    Path(__file__).absolute().parents[3]
+    pathlib.Path(__file__).absolute().parent.parent.parent.parent
     / "tools/linter/adapters/no_merge_conflict_csv_linter.py"
 )
 

benchmarks/dynamo/ci_expected_accuracy/update_expected.py

@@ -18,24 +18,23 @@ Known limitations:
 import argparse
 import json
 import os
+import pathlib
 import subprocess
 import sys
 import urllib
 from io import BytesIO
 from itertools import product
-from pathlib import Path
 from urllib.request import urlopen
 from zipfile import ZipFile
 
 import pandas as pd
 import requests
 
-
 # Note: the public query url targets this rockset lambda:
 # https://console.rockset.com/lambdas/details/commons.artifacts
 ARTIFACTS_QUERY_URL = "https://api.usw2a1.rockset.com/v1/public/shared_lambdas/4ca0033e-0117-41f5-b043-59cde19eff35"
 CSV_LINTER = str(
-    Path(__file__).absolute().parents[3]
+    pathlib.Path(__file__).absolute().parent.parent.parent.parent
     / "tools/linter/adapters/no_merge_conflict_csv_linter.py"
 )
 

docs/source/scripts/build_opsets.py

@@ -4,12 +4,12 @@ from pathlib import Path
 
 import torch
 import torch._prims as prims
+
 from torchgen.gen import parse_native_yaml
 
-
-ROOT = Path(__file__).absolute().parents[3]
-NATIVE_FUNCTION_YAML_PATH = ROOT / "aten/src/ATen/native/native_functions.yaml"
-TAGS_YAML_PATH = ROOT / "aten/src/ATen/native/tags.yaml"
+ROOT = Path(__file__).absolute().parent.parent.parent.parent
+NATIVE_FUNCTION_YAML_PATH = ROOT / Path("aten/src/ATen/native/native_functions.yaml")
+TAGS_YAML_PATH = ROOT / Path("aten/src/ATen/native/tags.yaml")
 
 BUILD_DIR = "build/ir"
 ATEN_OPS_CSV_FILE = "aten_ops.csv"

docs/source/scripts/build_quantization_configs.py

@@ -15,7 +15,7 @@ from torch.ao.quantization.backend_config.utils import (
 
 # Create a directory for the images, if it doesn't exist
 QUANTIZATION_BACKEND_CONFIG_IMAGE_PATH = os.path.join(
-    os.path.realpath(os.path.dirname(__file__)), "quantization_backend_configs"
+    os.path.realpath(os.path.join(__file__, "..")), "quantization_backend_configs"
 )
 
 if not os.path.exists(QUANTIZATION_BACKEND_CONFIG_IMAGE_PATH):

docs/source/scripts/exportdb/generate_example_rst.py

@@ -5,15 +5,16 @@ from pathlib import Path
 
 import torch
 import torch._dynamo as torchdynamo
+
 from torch._export.db.case import ExportCase, normalize_inputs
 from torch._export.db.examples import all_examples
 from torch.export import export
 
 
 PWD = Path(__file__).absolute().parent
-ROOT = Path(__file__).absolute().parents[3]
-SOURCE = ROOT / "source"
-EXPORTDB_SOURCE = SOURCE / "generated" / "exportdb"
+ROOT = Path(__file__).absolute().parent.parent.parent.parent
+SOURCE = ROOT / Path("source")
+EXPORTDB_SOURCE = SOURCE / Path("generated") / Path("exportdb")
 
 
 def generate_example_rst(example_case: ExportCase):

scripts/compile_tests/update_failures.py

@@ -1,8 +1,8 @@
 #!/usr/bin/env python3
 import argparse
 import os
+import pathlib
 import subprocess
-from pathlib import Path
 
 from common import (
     get_testcases,
@@ -12,8 +12,8 @@ from common import (
     key,
     open_test_results,
 )
-from download_reports import download_reports
 
+from download_reports import download_reports
 
 """
 Usage: update_failures.py /path/to/dynamo_test_failures.py /path/to/test commit_sha
@@ -194,7 +194,7 @@ if __name__ == "__main__":
         "filename",
         nargs="?",
         default=str(
-            Path(__file__).absolute().parents[2]
+            pathlib.Path(__file__).absolute().parent.parent.parent
             / "torch/testing/_internal/dynamo_test_failures.py"
         ),
         help="Optional path to dynamo_test_failures.py",
@@ -203,7 +203,7 @@ if __name__ == "__main__":
     parser.add_argument(
         "test_dir",
         nargs="?",
-        default=str(Path(__file__).absolute().parents[2] / "test"),
+        default=str(pathlib.Path(__file__).absolute().parent.parent.parent / "test"),
         help="Optional path to test folder",
     )
     parser.add_argument(
@@ -219,7 +219,7 @@ if __name__ == "__main__":
         action="store_true",
     )
     args = parser.parse_args()
-    assert Path(args.filename).exists(), args.filename
-    assert Path(args.test_dir).exists(), args.test_dir
+    assert pathlib.Path(args.filename).exists(), args.filename
+    assert pathlib.Path(args.test_dir).exists(), args.test_dir
     dynamo38, dynamo311 = download_reports(args.commit, ("dynamo38", "dynamo311"))
     update(args.filename, args.test_dir, dynamo38, dynamo311, args.also_remove_skips)

test/jit/fixtures_srcs/generate_models.py

@@ -5,13 +5,12 @@ import zipfile
 from pathlib import Path
 from typing import Set
 
+import torch
+
 # Use asterisk symbol so developer doesn't need to import here when they add tests for upgraders.
 from test.jit.fixtures_srcs.fixtures_src import *  # noqa: F403
-
-import torch
 from torch.jit.mobile import _export_operator_list, _load_for_lite_interpreter
 
-
 logging.basicConfig(stream=sys.stdout, level=logging.INFO)
 logger = logging.getLogger(__name__)
 logger.setLevel(logging.DEBUG)

test/jit/test_backend_nnapi.py

@@ -9,7 +9,6 @@ import torch
 import torch._C
 from torch.testing._internal.common_utils import IS_FBCODE, skipIfTorchDynamo
 
-
 # hacky way to skip these tests in fbcode:
 # during test execution in fbcode, test_nnapi is available during test discovery,
 # but not during test execution. So we can't try-catch here, otherwise it'll think
@@ -41,7 +40,7 @@ Inherits most tests from TestNNAPI, which loads Android NNAPI models
 without the delegate API.
 """
 # First skip is needed for IS_WINDOWS or IS_MACOS to skip the tests.
-torch_root = Path(__file__).resolve().parents[2]
+torch_root = Path(__file__).resolve().parent.parent.parent
 lib_path = torch_root / "build" / "lib" / "libnnapi_backend.so"
 
 

test/mobile/test_bytecode.py

@@ -20,7 +20,6 @@ from torch.jit.mobile import (
 )
 from torch.testing._internal.common_utils import run_tests, TestCase
 
-
 pytorch_test_dir = Path(__file__).resolve().parents[1]
 
 # script_module_v4.ptl and script_module_v5.ptl source code

test/mobile/test_upgrader_codegen.py

@@ -6,8 +6,8 @@ from pathlib import Path
 
 from torch.jit.generate_bytecode import generate_upgraders_bytecode
 from torch.testing._internal.common_utils import run_tests, TestCase
-from torchgen.operator_versions.gen_mobile_upgraders import sort_upgrader, write_cpp
 
+from torchgen.operator_versions.gen_mobile_upgraders import sort_upgrader, write_cpp
 
 pytorch_caffe2_dir = Path(__file__).resolve().parents[2]
 

test/mobile/test_upgraders.py

@@ -6,10 +6,10 @@ from pathlib import Path
 
 import torch
 import torch.utils.bundled_inputs
+
 from torch.jit.mobile import _load_for_lite_interpreter
 from torch.testing._internal.common_utils import run_tests, TestCase
 
-
 pytorch_test_dir = Path(__file__).resolve().parents[1]
 
 

test/onnx/onnx_test_common.py

@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import contextlib
+
 import copy
 import dataclasses
 import io
@@ -25,6 +26,7 @@ from typing import (
 )
 
 import numpy as np
+
 import onnxruntime
 import pytest
 import pytorch_test_common
@@ -38,7 +40,6 @@ from torch.testing._internal import common_utils
 from torch.testing._internal.opinfo import core as opinfo_core
 from torch.types import Number
 
-
 _NumericType = Union[Number, torch.Tensor, np.ndarray]
 _ModelType = Union[torch.nn.Module, Callable, torch_export.ExportedProgram]
 _InputArgsType = Optional[
@@ -47,7 +48,8 @@ _InputArgsType = Optional[
 _OutputsType = Sequence[_NumericType]
 
 onnx_model_dir = os.path.join(
-    os.path.dirname(os.path.dirname(os.path.realpath(__file__))),
+    os.path.dirname(os.path.realpath(__file__)),
+    os.pardir,
     "repos",
     "onnx",
     "onnx",
@@ -55,7 +57,11 @@ onnx_model_dir = os.path.join(
     "test",
     "data",
 )
+
+
 pytorch_converted_dir = os.path.join(onnx_model_dir, "pytorch-converted")
+
+
 pytorch_operator_dir = os.path.join(onnx_model_dir, "pytorch-operator")
 
 

test/quantization/core/test_docs.py

@@ -50,7 +50,7 @@ class TestQuantizationDocs(QuantizationTestCase):
                 "been updated to have the correct relative path between "
                 "test_docs.py and the docs."
             )
-            pytorch_root = core_dir.parents[2]
+            pytorch_root = core_dir.parent.parent.parent
             return pytorch_root / path_from_pytorch
 
         path_to_file = get_correct_path(path_from_pytorch)

test/test_typing.py

@@ -5,6 +5,7 @@ import itertools
 import os
 import re
 import shutil
+
 import unittest
 from collections import defaultdict
 from threading import Lock
@@ -17,7 +18,6 @@ from torch.testing._internal.common_utils import (
     TestCase,
 )
 
-
 try:
     from mypy import api
 except ImportError:
@@ -30,7 +30,7 @@ DATA_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), "typing"))
 REVEAL_DIR = os.path.join(DATA_DIR, "reveal")
 PASS_DIR = os.path.join(DATA_DIR, "pass")
 FAIL_DIR = os.path.join(DATA_DIR, "fail")
-MYPY_INI = os.path.join(os.path.dirname(os.path.dirname(DATA_DIR)), "mypy.ini")
+MYPY_INI = os.path.join(DATA_DIR, os.pardir, os.pardir, "mypy.ini")
 CACHE_DIR = os.path.join(DATA_DIR, ".mypy_cache")
 
 

tools/amd_build/build_amd.py

@@ -4,15 +4,17 @@
 import argparse
 import os
 import sys
-from pathlib import Path
 
-
-REPO_ROOT = Path(__file__).parents[2].resolve()
-sys.path.append(str(REPO_ROOT / "torch" / "utils"))
+sys.path.append(
+    os.path.realpath(
+        os.path.join(
+            __file__, os.path.pardir, os.path.pardir, os.path.pardir, "torch", "utils"
+        )
+    )
+)
 
 from hipify import hipify_python  # type: ignore[import]
 
-
 parser = argparse.ArgumentParser(
     description="Top-level script for HIPifying, filling in most common parameters"
 )
@@ -50,7 +52,7 @@ parser.add_argument(
 args = parser.parse_args()
 
 amd_build_dir = os.path.dirname(os.path.realpath(__file__))
-proj_dir = os.path.dirname(os.path.dirname(amd_build_dir))
+proj_dir = os.path.join(os.path.dirname(os.path.dirname(amd_build_dir)))
 
 if args.project_directory:
     proj_dir = args.project_directory

tools/build_libtorch.py

@@ -1,18 +1,16 @@
 import argparse
 import sys
-from pathlib import Path
+from os.path import abspath, dirname
 
-
-# By appending REPO_ROOT to sys.path, this module can import other torch
+# By appending pytorch_root to sys.path, this module can import other torch
 # modules even when run as a standalone script. i.e., it's okay either you
 # do `python build_libtorch.py` or `python -m tools.build_libtorch`.
-REPO_ROOT = Path(__file__).absolute().parent.parent
-sys.path.append(str(REPO_ROOT))
+pytorch_root = dirname(dirname(abspath(__file__)))
+sys.path.append(pytorch_root)
 
 from tools.build_pytorch_libs import build_caffe2
 from tools.setup_helpers.cmake import CMake
 
-
 if __name__ == "__main__":
     # Placeholder for future interface. For now just gives a nice -h.
     parser = argparse.ArgumentParser(description="Build libtorch")

tools/code_coverage/package/oss/utils.py

@@ -42,7 +42,9 @@ def get_llvm_tool_path() -> str:
 def get_pytorch_folder() -> str:
     # TOOLS_FOLDER in oss: pytorch/tools/code_coverage
     return os.path.abspath(
-        os.environ.get("PYTORCH_FOLDER", os.path.dirname(os.path.dirname(TOOLS_FOLDER)))
+        os.environ.get(
+            "PYTORCH_FOLDER", os.path.join(TOOLS_FOLDER, os.path.pardir, os.path.pardir)
+        )
     )
 
 

tools/code_coverage/package/util/setting.py

@@ -1,12 +1,13 @@
 import os
 from enum import Enum
-from pathlib import Path
 from typing import Dict, List, Set
 
 
 # <project folder>
 HOME_DIR = os.environ["HOME"]
-TOOLS_FOLDER = str(Path(__file__).resolve().parents[2])
+TOOLS_FOLDER = os.path.join(
+    os.path.dirname(os.path.realpath(__file__)), os.path.pardir, os.path.pardir
+)
 
 
 # <profile folder>

tools/gen_vulkan_spv.py

@@ -8,28 +8,24 @@ import glob
 import io
 import os
 import re
-import subprocess
 import sys
+from itertools import product
+
+sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
+import subprocess
 import textwrap
 from dataclasses import dataclass
-from itertools import product
-from pathlib import Path
 from typing import Any, Dict, List, Optional, Set, Tuple, Union
 
 import yaml
 from yaml.constructor import ConstructorError
 from yaml.nodes import MappingNode
 
-
 try:
     from yaml import CLoader as Loader
 except ImportError:
     from yaml import Loader  # type: ignore[assignment, misc]
 
-
-REPO_ROOT = Path(__file__).absolute().parent.parent
-sys.path.append(str(REPO_ROOT))
-
 CPP_H_NAME = "spv.h"
 CPP_SRC_NAME = "spv.cpp"
 

tools/linter/adapters/s3_init.py

@@ -11,7 +11,6 @@ import urllib.error
 import urllib.request
 from pathlib import Path
 
-
 # String representing the host platform (e.g. Linux, Darwin).
 HOST_PLATFORM = platform.system()
 HOST_PLATFORM_ARCH = platform.system() + "-" + platform.processor()
@@ -26,7 +25,10 @@ try:
     PYTORCH_ROOT = result.stdout.decode("utf-8").strip()
 except subprocess.CalledProcessError:
     # If git is not installed, compute repo root as 3 folders up from this file
-    PYTORCH_ROOT = str(Path(__file__).absolute().parents[3])
+    path_ = os.path.abspath(__file__)
+    for _ in range(4):
+        path_ = os.path.dirname(path_)
+    PYTORCH_ROOT = path_
 
 DRY_RUN = False
 

tools/onnx/update_default_opset_version.py

@@ -12,10 +12,10 @@ Run with no arguments.
 import argparse
 import datetime
 import os
+import pathlib
 import re
 import subprocess
 import sys
-from pathlib import Path
 from subprocess import DEVNULL
 from typing import Any
 
@@ -30,7 +30,7 @@ def read_sub_write(path: str, prefix_pat: str, new_default: int) -> None:
 
 
 def main(args: Any) -> None:
-    pytorch_dir = Path(__file__).parents[2].resolve()
+    pytorch_dir = pathlib.Path(__file__).parent.parent.parent.resolve()
     onnx_dir = pytorch_dir / "third_party" / "onnx"
     os.chdir(onnx_dir)
 

tools/setup_helpers/cmake.py

@@ -7,7 +7,6 @@ import platform
 import sys
 import sysconfig
 from distutils.version import LooseVersion
-from pathlib import Path
 from subprocess import CalledProcessError, check_call, check_output
 from typing import Any, cast, Dict, List, Optional
 
@@ -173,7 +172,9 @@ class CMake:
                 toolset_expr = ",".join([f"{k}={v}" for k, v in toolset_dict.items()])
                 args.append("-T" + toolset_expr)
 
-        base_dir = str(Path(__file__).absolute().parents[2])
+        base_dir = os.path.dirname(
+            os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+        )
         install_dir = os.path.join(base_dir, "torch")
 
         _mkdir_p(install_dir)

tools/setup_helpers/gen.py

@@ -1,13 +1,11 @@
 # Little stub file to get BUILD.bazel to play along
 
+import os.path
 import sys
-from pathlib import Path
 
-
-REPO_ROOT = Path(__file__).absolute().parents[2]
-sys.path.insert(0, str(REPO_ROOT))
+root = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+sys.path.insert(0, root)
 
 import torchgen.gen
 
-
 torchgen.gen.main()

tools/setup_helpers/gen_unboxing.py

@@ -1,13 +1,11 @@
 # Little stub file to get BUILD.bazel to play along
 
+import os.path
 import sys
-from pathlib import Path
 
-
-REPO_ROOT = Path(__file__).absolute().parents[2]
-sys.path.insert(0, str(REPO_ROOT))
+root = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+sys.path.insert(0, root)
 
 import tools.jit.gen_unboxing
 
-
 tools.jit.gen_unboxing.main(sys.argv[1:])

tools/setup_helpers/generate_code.py

@@ -1,25 +1,23 @@
 import argparse
 import os
+import pathlib
 import sys
-from pathlib import Path
 from typing import Any, cast, Optional
 
 import yaml
 
-
 try:
     # use faster C loader if available
     from yaml import CSafeLoader as YamlLoader
 except ImportError:
     from yaml import SafeLoader as YamlLoader  # type: ignore[assignment, misc]
 
-
 NATIVE_FUNCTIONS_PATH = "aten/src/ATen/native/native_functions.yaml"
 TAGS_PATH = "aten/src/ATen/native/tags.yaml"
 
 
 def generate_code(
-    gen_dir: Path,
+    gen_dir: pathlib.Path,
     native_functions_path: Optional[str] = None,
     tags_path: Optional[str] = None,
     install_dir: Optional[str] = None,
@@ -30,7 +28,6 @@ def generate_code(
 ) -> None:
     from tools.autograd.gen_annotated_fn_args import gen_annotated
     from tools.autograd.gen_autograd import gen_autograd, gen_autograd_python
-
     from torchgen.selective_build.selector import SelectiveBuilder
 
     # Build ATen based Variable classes
@@ -42,7 +39,7 @@ def generate_code(
     autograd_gen_dir = os.path.join(install_dir, "autograd", "generated")
     for d in (autograd_gen_dir, python_install_dir):
         os.makedirs(d, exist_ok=True)
-    autograd_dir = os.fspath(Path(__file__).parent.parent / "autograd")
+    autograd_dir = os.fspath(pathlib.Path(__file__).parent.parent / "autograd")
 
     if subset == "pybindings" or not subset:
         gen_autograd_python(
@@ -109,9 +106,8 @@ def get_selector(
     operators_yaml_path: Optional[str],
 ) -> Any:
     # cwrap depends on pyyaml, so we can't import it earlier
-    REPO_ROOT = Path(__file__).absolute().parents[2]
-    sys.path.insert(0, str(REPO_ROOT))
-
+    root = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+    sys.path.insert(0, root)
     from torchgen.selective_build.selector import SelectiveBuilder
 
     assert not (
@@ -135,8 +131,8 @@ def main() -> None:
     parser.add_argument("--tags-path")
     parser.add_argument(
         "--gen-dir",
-        type=Path,
-        default=Path("."),
+        type=pathlib.Path,
+        default=pathlib.Path("."),
         help="Root directory where to install files. Defaults to the current working directory.",
     )
     parser.add_argument(

tools/stats/export_test_times.py

@@ -1,10 +1,8 @@
+import pathlib
 import sys
-from pathlib import Path
 
-
-REPO_ROOT = Path(__file__).resolve().parents[2]
+REPO_ROOT = pathlib.Path(__file__).resolve().parent.parent.parent
 sys.path.append(str(REPO_ROOT))
-
 from tools.stats.import_test_stats import get_test_class_times, get_test_times
 
 

tools/stats/import_test_stats.py

@@ -3,13 +3,12 @@
 import datetime
 import json
 import os
+import pathlib
 import shutil
-from pathlib import Path
 from typing import Any, Callable, cast, Dict, List, Optional, Union
 from urllib.request import urlopen
 
-
-REPO_ROOT = Path(__file__).resolve().parents[2]
+REPO_ROOT = pathlib.Path(__file__).resolve().parent.parent.parent
 
 
 def get_disabled_issues() -> List[str]:
@@ -21,7 +20,7 @@ def get_disabled_issues() -> List[str]:
 
 SLOW_TESTS_FILE = ".pytorch-slow-tests.json"
 DISABLED_TESTS_FILE = ".pytorch-disabled-tests.json"
-ADDITIONAL_CI_FILES_FOLDER = Path(".additional_ci_files")
+ADDITIONAL_CI_FILES_FOLDER = pathlib.Path(".additional_ci_files")
 TEST_TIMES_FILE = "test-times.json"
 TEST_CLASS_TIMES_FILE = "test-class-times.json"
 TEST_FILE_RATINGS_FILE = "test-file-ratings.json"
@@ -35,7 +34,7 @@ FILE_CACHE_LIFESPAN_SECONDS = datetime.timedelta(hours=3).seconds
 
 
 def fetch_and_cache(
-    dirpath: Union[str, Path],
+    dirpath: Union[str, pathlib.Path],
     name: str,
     url: str,
     process_fn: Callable[[Dict[str, Any]], Dict[str, Any]],
@@ -43,7 +42,7 @@ def fetch_and_cache(
     """
     This fetch and cache utils allows sharing between different process.
     """
-    Path(dirpath).mkdir(exist_ok=True)
+    pathlib.Path(dirpath).mkdir(exist_ok=True)
 
     path = os.path.join(dirpath, name)
     print(f"Downloading {url} to {path}")
@@ -51,7 +50,7 @@ def fetch_and_cache(
     def is_cached_file_valid() -> bool:
         # Check if the file is new enough (see: FILE_CACHE_LIFESPAN_SECONDS). A real check
         # could make a HEAD request and check/store the file's ETag
-        fname = Path(path)
+        fname = pathlib.Path(path)
         now = datetime.datetime.now()
         mtime = datetime.datetime.fromtimestamp(fname.stat().st_mtime)
         diff = now - mtime

tools/test/heuristics/test_heuristics.py

@@ -1,16 +1,14 @@
 # For testing specific heuristics
 import io
 import json
+import pathlib
 import sys
 import unittest
-from pathlib import Path
 from typing import Any, Dict, List, Set
 from unittest import mock
 
-
-REPO_ROOT = Path(__file__).resolve().parents[3]
+REPO_ROOT = pathlib.Path(__file__).resolve().parent.parent.parent.parent
 sys.path.append(str(REPO_ROOT))
-
 from tools.test.heuristics.test_interface import TestTD
 from tools.testing.target_determination.determinator import TestPrioritizations
 from tools.testing.target_determination.heuristics.filepath import (
@@ -25,7 +23,6 @@ from tools.testing.target_determination.heuristics.previously_failed_in_pr impor
 )
 from tools.testing.test_run import TestRun
 
-
 sys.path.remove(str(REPO_ROOT))
 
 HEURISTIC_CLASS = "tools.testing.target_determination.heuristics.historical_class_failure_correlation."

tools/test/heuristics/test_interface.py

@@ -1,16 +1,13 @@
+import pathlib
 import sys
 import unittest
-from pathlib import Path
 from typing import Any, Dict, List
 
-
-REPO_ROOT = Path(__file__).resolve().parents[3]
+REPO_ROOT = pathlib.Path(__file__).resolve().parent.parent.parent.parent
 sys.path.append(str(REPO_ROOT))
-
 import tools.testing.target_determination.heuristics.interface as interface
 from tools.testing.test_run import TestRun
 
-
 sys.path.remove(str(REPO_ROOT))
 
 

tools/test/heuristics/test_utils.py

@@ -1,16 +1,14 @@
+import pathlib
 import sys
 import unittest
-from pathlib import Path
 from typing import Any, Dict
 
 
-REPO_ROOT = Path(__file__).resolve().parents[3]
+REPO_ROOT = pathlib.Path(__file__).resolve().parent.parent.parent.parent
 sys.path.append(str(REPO_ROOT))
-
 import tools.testing.target_determination.heuristics.utils as utils
 from tools.testing.test_run import TestRun
 
-
 sys.path.remove(str(REPO_ROOT))
 
 

tools/test/test_gen_backend_stubs.py

@@ -1,5 +1,6 @@
 # Owner(s): ["module: codegen"]
 
+import os
 import tempfile
 import unittest
 from typing import Optional
@@ -7,8 +8,12 @@ from typing import Optional
 import expecttest
 
 from torchgen.gen import _GLOBAL_PARSE_NATIVE_YAML_CACHE  # noqa: F401
+
 from torchgen.gen_backend_stubs import run
 
+path = os.path.dirname(os.path.realpath(__file__))
+gen_backend_stubs_path = os.path.join(path, "../torchgen/gen_backend_stubs.py")
+
 
 # gen_backend_stubs.py is an integration point that is called directly by external backends.
 # The tests here are to confirm that badly formed inputs result in reasonable error messages.

tools/test/test_test_run.py

@@ -1,9 +1,8 @@
+import pathlib
 import sys
 import unittest
-from pathlib import Path
 
-
-REPO_ROOT = Path(__file__).resolve().parents[2]
+REPO_ROOT = pathlib.Path(__file__).resolve().parent.parent.parent
 try:
     # using tools/ to optimize test run.
     sys.path.append(str(REPO_ROOT))

tools/test/test_test_selections.py

@@ -1,13 +1,12 @@
 import functools
+import pathlib
 import random
 import sys
 import unittest
 from collections import defaultdict
-from pathlib import Path
 from typing import Dict, List, Tuple
 
-
-REPO_ROOT = Path(__file__).resolve().parents[2]
+REPO_ROOT = pathlib.Path(__file__).resolve().parent.parent.parent
 try:
     # using tools/ to optimize test run.
     sys.path.append(str(REPO_ROOT))

tools/test/test_upload_stats_lib.py

@@ -1,18 +1,16 @@
 import decimal
 import inspect
+import pathlib
 import sys
 import unittest
-from pathlib import Path
 from typing import Any, Dict
 from unittest import mock
 
-
-REPO_ROOT = Path(__file__).resolve().parents[2]
+REPO_ROOT = pathlib.Path(__file__).resolve().parent.parent.parent
 sys.path.insert(0, str(REPO_ROOT))
-
 from tools.stats.upload_metrics import add_global_metric, emit_metric
-from tools.stats.upload_stats_lib import BATCH_SIZE, upload_to_rockset
 
+from tools.stats.upload_stats_lib import BATCH_SIZE, upload_to_rockset
 
 sys.path.remove(str(REPO_ROOT))
 

tools/testing/discover_tests.py

@@ -4,11 +4,10 @@ import sys
 from pathlib import Path
 from typing import List, Optional, Union
 
-
 CPP_TEST_PREFIX = "cpp"
 CPP_TEST_PATH = "build/bin"
 CPP_TESTS_DIR = os.path.abspath(os.getenv("CPP_TESTS_DIR", default=CPP_TEST_PATH))
-REPO_ROOT = Path(__file__).resolve().parents[2]
+REPO_ROOT = Path(__file__).resolve().parent.parent.parent
 
 
 def parse_test_module(test: str) -> str:

tools/testing/do_target_determination_for_s3.py

@@ -1,10 +1,10 @@
 import json
 import os
+import pathlib
 import sys
-from pathlib import Path
 
 
-REPO_ROOT = Path(__file__).resolve().parents[2]
+REPO_ROOT = pathlib.Path(__file__).resolve().parent.parent.parent
 sys.path.insert(0, str(REPO_ROOT))
 
 from tools.stats.import_test_stats import (
@@ -18,6 +18,7 @@ from tools.stats.import_test_stats import (
     get_test_times,
 )
 from tools.stats.upload_metrics import emit_metric
+
 from tools.testing.discover_tests import TESTS
 from tools.testing.target_determination.determinator import (
     AggregatedHeuristics,
@@ -25,7 +26,6 @@ from tools.testing.target_determination.determinator import (
     TestPrioritizations,
 )
 
-
 sys.path.remove(str(REPO_ROOT))
 
 

tools/testing/explicit_ci_jobs.py

@@ -2,15 +2,16 @@
 
 import argparse
 import fnmatch
+import pathlib
 import subprocess
 import textwrap
-from pathlib import Path
+
 from typing import Any, Dict, List
 
 import yaml
 
 
-REPO_ROOT = Path(__file__).parents[2]
+REPO_ROOT = pathlib.Path(__file__).parent.parent.parent
 CONFIG_YML = REPO_ROOT / ".circleci" / "config.yml"
 WORKFLOWS_DIR = REPO_ROOT / ".github" / "workflows"
 

tools/testing/modulefinder_determinator.py

@@ -1,12 +1,11 @@
 import modulefinder
 import os
+import pathlib
 import sys
 import warnings
-from pathlib import Path
 from typing import Any, Dict, List, Set
 
-
-REPO_ROOT = Path(__file__).resolve().parents[2]
+REPO_ROOT = pathlib.Path(__file__).resolve().parent.parent.parent
 
 # These tests are slow enough that it's worth calculating whether the patch
 # touched any related files first. This list was manually generated, but for every

tools/testing/target_determination/gen_artifact.py

@@ -1,10 +1,9 @@
 import json
 import os
-from pathlib import Path
+import pathlib
 from typing import Any, List
 
-
-REPO_ROOT = Path(__file__).resolve().parents[3]
+REPO_ROOT = pathlib.Path(__file__).resolve().parent.parent.parent.parent
 
 
 def gen_ci_artifact(included: List[Any], excluded: List[Any]) -> None:

tools/testing/target_determination/heuristics/filepath.py

@@ -8,14 +8,14 @@ from tools.testing.target_determination.heuristics.interface import (
     HeuristicInterface,
     TestPrioritizations,
 )
+
 from tools.testing.target_determination.heuristics.utils import (
     normalize_ratings,
     query_changed_files,
 )
 from tools.testing.test_run import TestRun
 
-
-REPO_ROOT = Path(__file__).parents[3]
+REPO_ROOT = Path(__file__).parent.parent.parent.parent
 
 keyword_synonyms: Dict[str, List[str]] = {
     "amp": ["mixed_precision"],

tools/testing/target_determination/heuristics/llm.py

@@ -14,7 +14,7 @@ from tools.testing.target_determination.heuristics.utils import normalize_rating
 from tools.testing.test_run import TestRun
 
 
-REPO_ROOT = Path(__file__).resolve().parents[4]
+REPO_ROOT = Path(__file__).resolve().parent.parent.parent.parent.parent
 
 
 class LLM(HeuristicInterface):

tools/testing/target_determination/heuristics/previously_failed_in_pr.py

@@ -8,6 +8,7 @@ from tools.stats.import_test_stats import (
     TD_HEURISTIC_PREVIOUSLY_FAILED,
     TD_HEURISTIC_PREVIOUSLY_FAILED_ADDITIONAL,
 )
+
 from tools.testing.target_determination.heuristics.interface import (
     HeuristicInterface,
     TestPrioritizations,
@@ -17,8 +18,7 @@ from tools.testing.target_determination.heuristics.utils import (
 )
 from tools.testing.test_run import TestRun
 
-
-REPO_ROOT = Path(__file__).resolve().parents[4]
+REPO_ROOT = Path(__file__).resolve().parent.parent.parent.parent.parent
 
 
 class PreviouslyFailedInPR(HeuristicInterface):

tools/testing/target_determination/heuristics/utils.py

@@ -11,8 +11,7 @@ from warnings import warn
 
 from tools.testing.test_run import TestRun
 
-
-REPO_ROOT = Path(__file__).resolve().parents[4]
+REPO_ROOT = Path(__file__).resolve().parent.parent.parent.parent.parent
 
 
 def python_test_file_to_test_name(tests: Set[str]) -> Set[str]:

tools/testing/test_selections.py

@@ -2,13 +2,13 @@ import math
 import os
 import subprocess
 from pathlib import Path
+
 from typing import Callable, Dict, FrozenSet, List, Optional, Sequence, Tuple
 
 from tools.stats.import_test_stats import get_disabled_tests, get_slow_tests
 from tools.testing.test_run import ShardedTest, TestRun
 
-
-REPO_ROOT = Path(__file__).resolve().parents[2]
+REPO_ROOT = Path(__file__).resolve().parent.parent.parent
 
 IS_MEM_LEAK_CHECK = os.getenv("PYTORCH_TEST_CUDA_MEM_LEAK_CHECK", "0") == "1"
 BUILD_ENVIRONMENT = os.getenv("BUILD_ENVIRONMENT", "")

tools/vscode_settings.py

@@ -2,7 +2,6 @@
 
 from pathlib import Path
 
-
 try:
     # VS Code settings allow comments and trailing commas, which are not valid JSON.
     import json5 as json  # type: ignore[import]

torch/_inductor/runtime/compile_tasks.py

@@ -5,7 +5,6 @@ import functools
 import os
 import sys
 import warnings
-from pathlib import Path
 from types import ModuleType
 from typing import Any, Callable, Dict
 
@@ -52,13 +51,15 @@ def _reload_python_module(key, path):
 def _set_triton_ptxas_path() -> None:
     if os.environ.get("TRITON_PTXAS_PATH") is not None:
         return
-    ptxas = Path(__file__).absolute().parents[1] / "bin" / "ptxas"
-    if not ptxas.exists():
+    ptxas_path = os.path.abspath(
+        os.path.join(os.path.dirname(__file__), "..", "bin", "ptxas")
+    )
+    if not os.path.exists(ptxas_path):
         return
-    if ptxas.is_file() and os.access(ptxas, os.X_OK):
-        os.environ["TRITON_PTXAS_PATH"] = str(ptxas)
+    if os.path.isfile(ptxas_path) and os.access(ptxas_path, os.X_OK):
+        os.environ["TRITON_PTXAS_PATH"] = ptxas_path
     else:
-        warnings.warn(f"{ptxas} exists but is not an executable")
+        warnings.warn(f"{ptxas_path} exists but is not an executable")
 
 
 def _worker_compile_triton(load_kernel: Callable[[], Any], extra_env: Dict[str, str]):

torch/testing/_internal/common_utils.py

@@ -4579,7 +4579,7 @@ def find_library_location(lib_name: str) -> Path:
     path = torch_root / 'lib' / lib_name
     if os.path.exists(path):
         return path
-    torch_root = Path(__file__).resolve().parents[2]
+    torch_root = Path(__file__).resolve().parent.parent.parent
     return torch_root / 'build' / 'lib' / lib_name
 
 def skip_but_pass_in_sandcastle(reason):

torchgen/gen_backend_stubs.py

@@ -1,8 +1,8 @@
 import argparse
 import os
+import pathlib
 import re
 from collections import Counter, defaultdict, namedtuple
-from pathlib import Path
 from typing import Dict, List, Optional, Sequence, Set, Union
 
 import yaml
@@ -527,7 +527,7 @@ def run(
     source_yaml: str, output_dir: str, dry_run: bool, impl_path: Optional[str] = None
 ) -> None:
     # Assumes that this file lives at PYTORCH_ROOT/torchgen/gen_backend_stubs.py
-    pytorch_root = Path(__file__).absolute().parent.parent
+    pytorch_root = pathlib.Path(__file__).parent.parent.absolute()
     template_dir = os.path.join(pytorch_root, "aten/src/ATen/templates")
 
     def make_file_manager(install_dir: str) -> FileManager:

torchgen/gen_lazy_tensor.py

@@ -1,7 +1,7 @@
 import argparse
 import os
+import pathlib
 from collections import namedtuple
-from pathlib import Path
 from typing import (
     Any,
     Callable,
@@ -261,7 +261,7 @@ def main() -> None:
     options = parser.parse_args()
 
     # Assumes that this file lives at PYTORCH_ROOT/torchgen/gen_backend_stubs.py
-    torch_root = Path(__file__).absolute().parents[2]
+    torch_root = pathlib.Path(__file__).parent.parent.parent.absolute()
     aten_path = str(torch_root / "aten" / "src" / "ATen")
     lazy_ir_generator: Type[GenLazyIR] = default_args.lazy_ir_generator
     if options.gen_ts_lowerings: