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Diffstat (limited to 'Doc/whatsnew/3.8.rst')
| -rw-r--r-- | Doc/whatsnew/3.8.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst index 91e0d5b..e5e6d4a5 100644 --- a/Doc/whatsnew/3.8.rst +++ b/Doc/whatsnew/3.8.rst @@ -277,6 +277,14 @@ Optimizations See :ref:`shutil-platform-dependent-efficient-copy-operations` section. (Contributed by Giampaolo Rodola' in :issue:`25427`.) +* :func:`shutil.copytree` uses :func:`os.scandir` function and all copy + functions depending from it use cached :func:`os.stat` values. The speedup + for copying a directory with 8000 files is around +9% on Linux, +20% on + Windows and +30% on a Windows SMB share. Also the number of :func:`os.stat` + syscalls is reduced by 38% making :func:`shutil.copytree` especially faster + on network filesystems. (Contributed by Giampaolo Rodola' in :issue:`33695`.) + + * The default protocol in the :mod:`pickle` module is now Protocol 4, first introduced in Python 3.4. It offers better performance and smaller size compared to Protocol 3 available since Python 3.0. |