No longer add /Library/Python/3.x/site-packages, the Apple-supplied
system Python site-packages directory, to sys.path for macOS framework
builds in case Apple ships a version of Python 3. A similar change
was made earlier to Python 2.7 where it was found that the coupling
between the system Python and a user-installed framework Python often
caused confusion or pip install failures.

* bpo-29585: Fix PC/pyconfig.h whitespaces

Run "make patchcheck".

* bpo-29585: Define PYTHONFRAMEWORK in PC/pyconfig.h

* site: Fix path separator in _get_path() on Windows

Avoid importing `sysconfig` from `site` by copying minimum code.
Python startup is 5% faster on Linux and 30% faster on macOS

Call abs_paths() only if removeduppaths() changed sys.path

This makes Python startup from a virtual environment a little faster.

Patch by Chi Hsuan Yen.

directories.

Thanks to Wolfgang Langner for the bug report and initial version of
the patch.

to format short Python version.

Issue #26099: The site module now writes an error into stderr if sitecustomize
module can be imported but executing the module raise an ImportError. Same
change for usercustomize.

Issue #21711: support for "site-python" directories has now been removed from the site module (it was deprecated in 3.4).

Patch by Meador Inge.

Issue #20411: Use readline.get_current_history_length to check for the presence of a history, rather than get_history_item, which assumes a history is present.

Issue #19375: The site module adding a "site-python" directory to sys.path, if it exists, is now deprecated.

I forgot to hit save.

to speed up interpreter start.

Issue #9548: Add a minimal "_bootlocale" module that is imported by the _io module instead of the full locale module.

Issue #5845: In site.py, only load readline history from ~/.python_history if no history has been read already.  This avoids double writes to the history file at shutdown.

Fixes issue #18206 Patch contributed by  Berker Peksag and py.user

Patch by Berker Peksag.

Issue #18621: Prevent the site module's patched builtins from keeping too many references alive for too long.

It creates a refleak in subinterpreters, as atexit callbacks aren't triggered at their end.

Issue #18214: Improve finalization of Python modules to avoid setting their globals to None, in most cases.

ModuleNotFoundError.