[New-bugs-announce] [issue44579] shutil.copy() inefficient implementation in Windows

[sfmc]

New submission from sfmc <Sergey_Filimonov at mentor.com>:

In Windows shutil.copy() uses _copyfileobj_readinto which copies file in user mode.
In Windows there is an fast API to copy file in kernel mode: CopyFile (see https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-copyfile).

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components: Library (Lib)
messages: 397076
nosy: sfmc
priority: normal
severity: normal
status: open
title: shutil.copy() inefficient implementation in Windows
type: performance
versions: Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44579>
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