> Could it be that you missed the fact that strings are immutable? That > means that you can't change the content of the object once it is > initialized. In particular, it means that you e.g. have to override > __new__ instead of __init__, because the content is already fixed when > the latter is called. > > Uli
Yes, that's what I missed, and it explains why I found examples of str inheritance using __new__. I think this might end up being a puzzle I poke at for awhile. Also, I discovered that the attempt to create a "Path" class goes back to 2006, where it created a lot of discussion and was finally shelved: http://www.python.org/dev/peps/pep-0355/ A significant part of the problem seems to be that there was no inheritance from str at the time, so maybe a lot of the issues they ran into could be solved now. -- http://mail.python.org/mailman/listinfo/python-list
