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bpo-43743 add comment stating _USE_CP_SENDFILE should not be removed (#26024)

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Giampaolo Rodola 2021-05-10 22:45:06 +02:00 • committed by GitHub
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Lib/shutil.py
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@ -40,6 +40,8 @@ elif _WINDOWS:
import nt
COPY_BUFSIZE = 1024 * 1024 if _WINDOWS else 64 * 1024
# This should never be removed, see rationale in:
# https://bugs.python.org/issue43743#msg393429
_USE_CP_SENDFILE = hasattr(os, "sendfile") and sys.platform.startswith("linux")
_HAS_FCOPYFILE = posix and hasattr(posix, "_fcopyfile") # macOS