when i try to run the following program, Python complains about some
global name frozenset is not defined. Is set some new facility in
Python 2.4?
�# from Reinhold Birkenfeld
�def merge(pairings):
� sets = {}
� for x1, x2 in pairings:
� newset = (sets.get(x1, frozenset([x1]))
� | sets.get(x2, frozenset([x2])))
� for i in newset:
� sets[i] = newset
�
� return [list(aset) for aset in set(sets.itervalues())]
it would be nice if the two working programs do not use some package.
This problem shouldn't need to.
Xah
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