Bugs item #1631769, was opened at 2007-01-09 15:26
Message generated for change (Comment added) made by rhettinger
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Category: Extension Modules
Group: Python 2.6
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Christos Georgiou (tzot)
Assigned to: Raymond Hettinger (rhettinger)
Summary: Discrepancy between iterating empty and non-empty deques
Initial Comment:
>>> from collections import deque
>>> empty= deque()
>>> nonempty= deque([None])
>>> iter_empty= iter(empty)
>>> iter_nonempty= iter(nonempty)
>>> empty.append(1)
>>> nonempty.append(1)
>>> iter_empty.next()
Traceback (most recent call last):
File "<pyshell#16>", line 1, in <module>
iter_empty.next()
StopIteration
>>> iter_nonempty.next()
Traceback (most recent call last):
File "<pyshell#17>", line 1, in <module>
iter_nonempty.next()
RuntimeError: deque mutated during iteration
>>>
If the RuntimeError is the intended behaviour for a modified deque after its
iterator has been created, then iter_empty.next() should also raise the same
RuntimeError.
----------------------------------------------------------------------
>Comment By: Raymond Hettinger (rhettinger)
Date: 2007-01-09 15:46
Message:
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user_id=80475
Originator: NO
Fixed in rev 53299,
----------------------------------------------------------------------
Comment By: Christos Georgiou (tzot)
Date: 2007-01-09 15:29
Message:
Logged In: YES
user_id=539787
Originator: YES
Assigned to Raymond as requested in
http://mail.python.org/pipermail/python-dev/2007-January/070528.html
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