rocm_jax/jax/_src/path.py
Neil Girdhar 52ab8c4cc2 Fix detection of epath
Unfortunately, the old detection code doesn't guarantee that `epath` is
installed:
```
[utM] In [7]: importlib.util.find_spec("etils.epath")
Out[7]: ModuleSpec(name='etils.epath',
loader=<_frozen_importlib_external.SourceFileLoader object at
0x73b8492a7230>,
origin='/home/neil/src/cmm/.venv/lib/python3.12/site-packages/etils/epath/__init__.py',
submodule_search_locations=['/home/neil/src/cmm/.venv/lib/python3.12/site-packages/etils/epath'])

[utM] In [8]: import etils.epath
---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent
call last)
Cell In[8], line 1
----> 1 import etils.epath
...
ModuleNotFoundError: No module named 'importlib_resources'
```
This happened every time I ran jax with a clean environment.
2025-03-04 11:44:27 -05:00

46 lines
1.6 KiB
Python

# Copyright 2022 The JAX Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import Protocol
import logging
import os
import pathlib
__all__ = ["Path"]
logger = logging.getLogger(__name__)
epath_installed: bool
class PathProtocol(Protocol):
"""A factory that creates a PurePath."""
def __call__(self, *pathsegments: str | os.PathLike) -> pathlib.Path:
...
Path: PathProtocol
# If etils.epath (aka etils[epath] to pip) is present, we prefer it because it
# can read and write to, e.g., GCS buckets. Otherwise we use the builtin
# pathlib and can only read/write to the local filesystem.
try:
from etils import epath # type: ignore
except ImportError:
logger.debug("etils.epath was not found. Using pathlib for file I/O.")
Path = pathlib.Path
epath_installed = False
else:
logger.debug("etils.epath found. Using etils.epath for file I/O.")
# Ultimately, epath.Path implements pathlib.Path. See:
# https://github.com/google/etils/blob/2083f3d932a88d8a135ef57112cd1f9aff5d559e/etils/epath/abstract_path.py#L47
Path = epath.Path
epath_installed = True