>>> dict1={1: 4, 3: 5}... and 2 millions element
>>> dict2={3: 3, 8: 6}... and 3 millions element
If you don't mind doing some kind of lazy evaluation, you could do
something like...
------------------------------
dict1={1:4, 3:5}
dict2={3:3, 8:6}
import UserDict
class Merge(UserDict.DictMixin):
def __init__(self,d1,d2):
self.dict1 = d1
self.dict2 = d2
keyset = set(d1.keys())
keyset.update(d2.keys())
self.dkeys = list(keyset)
def keys(self):
return self.dkeys
def __getitem__(self,key):
v1 = 0
v2 = 0
if key in self.dict1:
v1 = self.dict1[key]
if key in self.dict2:
v2 = self.dict2[key]
return v1+v2
m = Merge(dict1,dict2)
print m
------------------------------
This basically does a sort of "virtual merge"... only merging when you
actually ask for an element in the list.
--
--------------------------------------------------------------------
Gary Coulbourne Software Developer
C/C++, Java, Perl, Python
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