python set 的与或非
2010-09-03 11:44
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def intersect(a, b):
""" return the intersection of two lists """
return list(set(a) & set(b))
def union(a, b):
""" return the union of two lists """
return list(set(a) | set(b))
def difference(a, b):
""" show whats in list b which isn't in list a """
return list(set(b).difference(set(a)))
""" return the intersection of two lists """
return list(set(a) & set(b))
def union(a, b):
""" return the union of two lists """
return list(set(a) | set(b))
def difference(a, b):
""" show whats in list b which isn't in list a """
return list(set(b).difference(set(a)))
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