Author: Armin Rigo <ar...@tunes.org>
Branch:
Changeset: r44706:f7d6c1b93269
Date: 2011-06-05 10:51 +0200
http://bitbucket.org/pypy/pypy/changeset/f7d6c1b93269/
Log: Document that old-style classes can have a __del__ on the instance,
but it may not be called on pypy.
diff --git a/pypy/doc/cpython_differences.rst b/pypy/doc/cpython_differences.rst
--- a/pypy/doc/cpython_differences.rst
+++ b/pypy/doc/cpython_differences.rst
@@ -173,6 +173,11 @@
>>>> A.__del__ = lambda self: None
__main__:1: RuntimeWarning: a __del__ method added to an existing type
will not be called
+Even more obscure: the same is true, for old-style classes, if you attach
+the ``__del__`` to an instance (even in CPython this does not work with
+new-style classes). You get a RuntimeWarning in PyPy. To fix these cases
+just make sure there is a ``__del__`` method in the class to start with.
+
Subclasses of built-in types
----------------------------
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