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Fix SF bug #486144: Uninitialized __slot__ vrbl is None.

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There's now a new structmember code, T_OBJECT_EX, which is used for
all __slot__ variables (except __weakref__, which has special behavior
anyway).  This new code raises AttributeError when the variable is
NULL rather than converting NULL to None.
This commit is contained in:
Guido van Rossum 2001-12-04 16:23:42 +00:00
parent ebca9fc1ba
commit 6b70599450
3 changed files with 19 additions and 6 deletions
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12
Lib/test/test_descr.py
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@ -978,19 +978,21 @@ def slots():
__slots__ = ['a']
x = C1()
verify(not hasattr(x, "__dict__"))
vereq(x.a, None)
verify(not hasattr(x, "a"))
x.a = 1
vereq(x.a, 1)
x.a = None
veris(x.a, None)
del x.a
vereq(x.a, None)
verify(not hasattr(x, "a"))
class C3(object):
__slots__ = ['a', 'b', 'c']
x = C3()
verify(not hasattr(x, "__dict__"))
verify(x.a is None)
verify(x.b is None)
verify(x.c is None)
verify(not hasattr(x, 'a'))
verify(not hasattr(x, 'b'))
verify(not hasattr(x, 'c'))
x.a = 1
x.b = 2
x.c = 3