Alex Martelli wrote:
Can anybody suggest where to find (within the standard library) or how to easily make (e.g. in a C extension) a type without a __mro__, except for those (such as types.InstanceType) which are explicitly recorded in the dispatch table copy._deepcopy_dispatch...?
something like this?
import re x = re.compile("") x
<_sre.SRE_Pattern object at 0x00B2F7A0>
x.__mro__
Traceback (most recent call last): File "<stdin>", line 1, in ? AttributeError: __mro__
import copy type(x) in copy._deepcopy_dispatch
False
</F>
Unfortunately, it *does* have a __deepcopy__ method, so I don't think it actually triggers the bug Alex is interested in:
Py> import re
Py> x = re.compile("")
Py> x.__mro__
Traceback (most recent call last):
File "<stdin>", line 1, in ?
AttributeError: __mro__
Py> from copy import deepcopy
Py> deepcopy(x)
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "C:\Python24\lib\copy.py", line 172, in deepcopy
y = copier(memo)
TypeError: cannot deepcopy this pattern object
Py> x.__deepcopy__
<built-in method __deepcopy__ of _sre.SRE_Pattern object at 0x00B242C0>Cheers, Nick.
--
Nick Coghlan | [EMAIL PROTECTED] | Brisbane, Australia
---------------------------------------------------------------
http://boredomandlaziness.skystorm.net
--
http://mail.python.org/mailman/listinfo/python-list
