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Add news about changes to metaclasses and __bases__ error checking.

This commit is contained in:
Jeremy Hylton 2007-02-27 18:33:31 +00:00
parent fa955697fa
commit cca75403c4
1 changed files with 7 additions and 0 deletions
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Misc/NEWS
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@ -126,6 +126,13 @@ Core and builtins
- Bug #1664966: Fix crash in exec if Unicode filename can't be decoded. - Bug #1664966: Fix crash in exec if Unicode filename can't be decoded.
- Add new requirements for metaclasses. 1) If type or a subclass of type
occurs in __bases__, it must occur before any non-type bases, e.g.
before regular classes. 2) If you assign to __bases__, you may not
change the metaclass. Many more illegal assignments to __bases__
are now checked and raise TypeErrors. This changed fixed at least
one known crash.
Library Library
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