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Diffstat (limited to 'Doc/whatsnew/3.8.rst')
| -rw-r--r-- | Doc/whatsnew/3.8.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst index 370ef46..053fe90 100644 --- a/Doc/whatsnew/3.8.rst +++ b/Doc/whatsnew/3.8.rst @@ -275,6 +275,15 @@ xml Optimizations ============= +* The :mod:`subprocess` module can now use the :func:`os.posix_spawn` function + in some cases for better performance. Currently, it is only used on macOS + and Linux (using glibc 2.24 or newer) if all these conditions are met: + + * *close_fds* is false; + * *preexec_fn*, *pass_fds*, *cwd*, *stdin*, *stdout*, *stderr* and + *start_new_session* parameters are not set; + * the *executable* path contains a directory. + * :func:`shutil.copyfile`, :func:`shutil.copy`, :func:`shutil.copy2`, :func:`shutil.copytree` and :func:`shutil.move` use platform-specific "fast-copy" syscalls on Linux, macOS and Solaris in order to copy the file |