[New-bugs-announce] [issue9314] inconsistent result when concatenating list with iterators

[Dirkjan Ochtman]

New submission from Dirkjan Ochtman <dirkjan at ochtman.nl>:

This seems wrong:

>>> a = []
>>> b = iter(['c', 'd'])
>>> a += b
>>> c = []
>>> c + iter(['d', 'e'])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: can only concatenate list (not "listiterator") to list

In other words, if iadd can deal with it, why can't add?

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components: Interpreter Core
messages: 110887
nosy: djc
priority: normal
severity: normal
status: open
title: inconsistent result when concatenating list with iterators
versions: Python 2.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue9314>
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