File: __init__.py

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pytorch-cuda 2.6.0%2Bdfsg-7
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from __future__ import annotations

import os
import sys


def which(thefile: str) -> str | None:
    path = os.environ.get("PATH", os.defpath).split(os.pathsep)
    for d in path:
        fname = os.path.join(d, thefile)
        fnames = [fname]
        if sys.platform == "win32":
            exts = os.environ.get("PATHEXT", "").split(os.pathsep)
            fnames += [fname + ext for ext in exts]
        for name in fnames:
            if os.access(name, os.F_OK | os.X_OK) and not os.path.isdir(name):
                return name
    return None