Another way to solve this problem is that we could define a new class
and try to emulate dict. It's dummy because you have to re-implement
all dict methods yourself, but it works. The code looks like this:
class Storage():
def __getattr__(self, key):
try:
return self.__dict__[key]
except:
return None
def __getitem__(self, key):
try:
return self.__dict__[key]
except:
return None
def __setattr__(self, key, value):
read_only_methods = ['clear',
'copy',
'fromkeys',
'get',
'has_key',
'items',
'iteritems',
'iterkeys',
'itervalues',
'keys',
'pop',
'popitem',
'setdefault',
'update',
'values']
if key in read_only_methods:
raise AttributeError("attribute '%s' is read-only" % key)
self.__dict__[key] = value
def clear(self):
self.__dict__ = dict()
def copy(self):
dup = Storage()
dup.__dict__ = self.__dict__.copy()
return dup
...
...
...
--
Luyun Xie
谢路云
http://magefromhell.blogspot.com/
(http://blog.hellmage.info/)
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