Hello,
I discovered this behaviour in dictionary which I find confusing. In
SneakyLang, I've tried to extend dictionary so it visits another class
after something is added:
class RegisterMap(dict):
def __setitem__(self, k, v):
dict.__setitem__(self, k,v)
self[k].visit_register_map(self)
However, when constructing dictionary with dictionary in constructor
like d = RegisterMap({'k':'v'}), __setitem__ is not called, so
workaround is needed:
class RegisterMap(dict):
def __init__(self, *args, **kwargs):
dict.__init__(self, *args, **kwargs)
for k in self:
self.__after_add(k)
def __after_add(self, k):
self[k].visit_register_map(self)
def __setitem__(self, k, v):
dict.__setitem__(self, k,v)
self.__after_add(k)
What is the reason for this behavior? Am I doing something wrong and
better approach is needed? Or should this be considered as minor bug in
Python? (tried this only in 2.4 so far)
Thank You,
Almad
--
http://mail.python.org/mailman/listinfo/python-list
