Created
October 16, 2013 11:14
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import collections | |
class TransformedDict(collections.MutableMapping): | |
def __init__(self, *args, **kwargs): | |
self.store = dict() | |
self.update(dict(*args, **kwargs)) # use the free update to set keys | |
def __getitem__(self, key): | |
return self.store[self.__keytransform__(key)] | |
def __setitem__(self, key, value): | |
self.store[self.__keytransform__(key)] = value | |
def __delitem__(self, key): | |
del self.store[self.__keytransform__(key)] | |
def __iter__(self): | |
return iter(self.store) | |
def __len__(self): | |
return len(self.store) | |
def __keytransform__(self, key): | |
return key | |
class NodesDict(TransformedDict): | |
def add(self, element): | |
return self.__setitem__(element, element) | |
def __keytransform__(self, key): | |
try: | |
# now uniq for hash is only hwaddr key | |
print 'hwaddr = ' + key['hwaddr'] | |
return key['hwaddr'] | |
except KeyError: | |
print "Error: hwaddr not in key" | |
raise() | |
compute1 = dict() | |
compute1['hwaddr'] = 'compute1_hwaddr' | |
compute2 = dict() | |
compute2['hwaddr'] = 'compute2_hwaddr' | |
compute3 = dict() | |
compute3['hwaddr'] = 'compute2_hwaddr' # duplicate hwaddr | |
nodes = NodesDict(); | |
nodes.add(compute1) | |
nodes.add(compute2) | |
print nodes.__len__() |
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Are you lost smth like that?
nodes.add(compute3)