kost BebiX wrote:
You're absolutely right! Now try to do except Keyerror: raise AttributeError
and it will also fail. But why?
07.01.2011, 15:45, "Jean-Michel Pichavant" <jeanmic...@sequans.com>:
kost BebiX wrote:
Hi everyone!
I just saw a bug (?) in bson.dbref:DBRef.__getattr__
Here's they're code:
def __getattr__(self, key):
return self.__kwargs[key]
And when you do copy.deepcopy on that object it will raise you KeyError. So
here's a small piece of code that reproduces the problem:
from http://docs.python.org/reference/datamodel.html
About __getattr__
"This method should return the (computed) attribute value or raise an
AttributeError
<http://docs.python.org/library/exceptions.html#exceptions.AttributeError>
exception."
The code you provided raises a KeyError thus methods such as 'getattr'
will fail as they expect an AttributeError exception.
JM
--
http://mail.python.org/mailman/listinfo/python-list
please don't top post :)
It fails because you simply did not returned any value (with your class
A example).
class A(object):
def __init__(self):
self.d = {}
def __getattr__(self, key):
try:
*return* self.d[key]
except KeyError:
raise AttributeError
works fine with deepcopy
JM
--
http://mail.python.org/mailman/listinfo/python-list
