[Patches] [ python-Patches-1141428 ] more __contains__ tests
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Fri Feb 18 08:21:32 CET 2005
Patches item #1141428, was opened at 2005-02-17 19:42
Message generated for change (Settings changed) made by rhettinger
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Category: Tests
>Group: Python 2.5
Status: Open
Resolution: None
Priority: 4
Submitted By: Jim Jewett (jimjjewett)
>Assigned to: Raymond Hettinger (rhettinger)
Summary: more __contains__ tests
Initial Comment:
Recently, there was a change to speed up
__contains__.
x in (1, 2, 3) would be compiled as
x in frozenset(1, 2, 3).
This was backed out, because frozensets raise a
typeerror when asked about unhashable objects.
These objects *can't* be in the set, but there was
concern about supporting objects in which a mutable
and an immutable compare equal.
So long as that is a requirement, it should be tested.
The new test for sequences ensures that they will use
__eq__ (and not rely on __hash__) in the future.
The change to the rich compare tests is just a
comment, pointing out that dicts can rely on
__hash__ as well as __eq__.
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