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import os
from contextlib import contextmanager
from pathlib import PurePath
from typing import Iterator, TypeVar, Union
PathLike = Union[PurePath, str]
PathLikeT = TypeVar("PathLikeT", bound=PathLike)
@contextmanager
def ctx_chdir(newdir: PathLikeT) -> Iterator[PathLikeT]:
cwd = os.getcwd()
try:
os.chdir(f"{newdir}")
yield newdir
finally:
os.chdir(cwd)
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