Message7334

Referring to http://docs.python.org/library/collections.html#collections.deque , deque() should take a maxlen keyword arg to enable a ringbuffer / bounded length deque. 

Jython:
Jython 2.7a2 (default:9c148a201233, May 24 2012, 15:49:00) 
[Java HotSpot(TM) 64-Bit Server VM (Apple Inc.)] on java1.6.0_33
Type "help", "copyright", "credits" or "license" for more information.
>>> from collections import deque
>>> deque(maxlen=10)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: deque() does not take keyword arguments
>>> 

CPython:
Python 2.7.3 (default, Jul  9 2012, 10:36:52) 
[GCC 4.2.1 Compatible Apple Clang 4.0 (tags/Apple/clang-418.0.60)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from collections import deque
>>> deque(maxlen=10)
deque([], maxlen=10)
>>>