The information about supporting weakrefs with types defined in C extensions
is moved to the Extending & Embedding manual. Py_TPFLAGS_HAVE_WEAKREFS is
no longer mentioned since it is part of Py_TPFLAGS_DEFAULT.
- weakref.ref and weakref.ReferenceType will become aliases for each
other
- weakref.ref will be a modern, new-style class with proper __new__
and __init__ methods
- weakref.WeakValueDictionary will have a lighter memory footprint,
using a new weakref.ref subclass to associate the key with the
value, allowing us to have only a single object of overhead for each
dictionary entry (currently, there are 3 objects of overhead per
entry: a weakref to the value, a weakref to the dictionary, and a
function object used as a weakref callback; the weakref to the
dictionary could be avoided without this change)
- a new macro, PyWeakref_CheckRefExact(), will be added
- PyWeakref_CheckRef() will check for subclasses of weakref.ref
This closes SF patch #983019.
type.__module__ behavior.
This adds the module name and a dot in front of the type name in every
type object initializer, except for built-in types (and those that
already had this). Note that it touches lots of Mac modules -- I have
no way to test these but the changes look right. Apologies if they're
not. This also touches the weakref docs, which contains a sample type
object initializer. It also touches the mmap test output, because the
mmap type's repr is included in that output. It touches object.h to
put the correct description in a comment.
get() method; just calling them is sufficient. (There was a get() method
for this in an early version of the implementation.)
Reported by Mats Wichmann.
Fred Drake
Armin Rigo
Georg Brandl
Raymond Hettinger
Martin v. Löwis
Tim Peters
Guido van Rossum
Andrew M. Kuchling