Paul Boddie p...@boddie.org.uk added the comment:
I don't disagree that OverflowError describes what's happening, but the need to
convert to an int in the first place is a detail of the machine - you'd have to
know that this is a limitation of whatever internal protocol CPython
implements -
R. David Murray rdmur...@bitdance.com added the comment:
Interestingly, this (len returning something larger than ssize_t) has not been
fixed in python3.
On the other hand, I still think the new-style message is better. Yes, it is
an implementation detail of CPython, but that is exactly the
New submission from Paul Boddie p...@boddie.org.uk:
As noted here:
http://www.selenic.com/pipermail/mercurial/2010-February/030068.html
This is probably documented somewhere, and there may even be a good reason for
the difference, but old-style classes raise TypeError when __len__ returns a
Paul Boddie p...@boddie.org.uk added the comment:
I would have expected a more accurate error message for the new-style class. In
the original message which brought this to my attention, the cause was not
particularly obvious:
R. David Murray rdmur...@bitdance.com added the comment:
In the example you give it seems to me that the message for the new style class
is more accurate and useful than the message for the old style class. Looking
at your mercurial example, it looks like the problem is the same (len
