GH-73991: Add pathlib.Path.copy() (#119058)

Add a `Path.copy()` method that copies the content of one file to another.

This method is similar to `shutil.copyfile()` but differs in the following ways:

- Uses `fcntl.FICLONE` where available (see GH-81338)
- Uses `os.copy_file_range` where available (see GH-81340)
- Uses `_winapi.CopyFile2` where available, even though this copies more metadata than the other implementations. This makes `WindowsPath.copy()` more similar to `shutil.copy2()`.

The method is presently _less_ specified than the `shutil` functions to allow OS-specific optimizations that might copy more or less metadata.

Incorporates code from GH-81338 and GH-93152.

Co-authored-by: Eryk Sun <eryksun@gmail.com>
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Barney Gale 2024-06-14 17:15:49 +01:00 committed by GitHub
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@ -100,6 +100,13 @@ os
by :func:`os.unsetenv`, or made outside Python in the same process.
(Contributed by Victor Stinner in :gh:`120057`.)
pathlib
-------
* Add :meth:`pathlib.Path.copy`, which copies the content of one file to
another, like :func:`shutil.copyfile`.
(Contributed by Barney Gale in :gh:`73991`.)
symtable
--------