object is not a real str or unicode but an instance
of a subclass, construct the output via looping
over __getitem__. This guarantees that the result
is the same for function==None and function==lambda x:x
This doesn't happen for tuples, because filtertuple()
uses PyTuple_GetItem().
(This was discussed on SF bug #665835).
blindly assumed that tp_as_sequence->sq_item always returns
a str or unicode object. This might fail with str or unicode
subclasses.
This patch checks whether the object returned from __getitem__
is a str/unicode object and raises a TypeError if not (and
the filter function returned true).
Furthermore the result for __getitem__ can be more than one
character long, so checks for enough memory have to be done.
port the tests to PyUnit and add many tests for error
cases. This increases code coverage in Python/bltinmodule.c
from 75% to 92%. (From SF patch #662807, with
assert_(not fcmp(x, y)) replaced with assertAlmostEqual(x, y)
where possible)
imports of test modules now import from the test package. Other
related oddities are also fixed (like DeprecationWarning filters that
weren't specifying the full import part, etc.). Also did a general
code cleanup to remove all "from test.test_support import *"'s. Other
from...import *'s weren't changed.
Tim Peters
Walter Dörwald
Just van Rossum
Neal Norwitz
Martin v. Löwis
Barry Warsaw
Guido van Rossum