I'm back...[wondering why copy.deepcopy barfs on array instances]
http://www.python.org/doc/2.3.3/lib/module-copy.html
deepcopy:
...
This version does not copy types like module, class, function, method, stack trace, stack frame, file, socket, window, *array*, or any similar types.
...
which you can see, by doing:
>>> a = array("d",[random() for x in range(3)])
>>> b = deepcopy(a)
Traceback (most recent call last):
File "<input>", line 1, in ?
File "C:\Python24\lib\copy.py", line 172, in deepcopy
y = copier(memo)
TypeError: __deepcopy__() takes no arguments (1 given)In any case there's is no difference between deep and shallow - copying an array, since it can contain only scalars, rather than compound objects:
http://www.python.org/doc/2.3.3/lib/module-copy.html The difference between shallow and deep copying is only relevant for compound objects (objects that contain other objects, like lists or class instances).
array does have a __deepcopy__ method, albeit not compatible with copy.deepcopy. You can use this to make the (shallow) copy.
>>> b = a.__deepcopy__()
Michael
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