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In [3]: i = set(['dd','d']) In [4]: v.intersection(i) # 等同于 i&v Out[4]: {'d'} In [5]: v.difference(i) #等同于 i-v Out[5]: {'a', 'b', 'c', 'e'} In [12]: i|v Out[12]: {'a', 'b', 'c', 'd', 'dd', 'e'} |
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In [3]: i = set(['dd','d']) In [4]: v.intersection(i) # 等同于 i&v Out[4]: {'d'} In [5]: v.difference(i) #等同于 i-v Out[5]: {'a', 'b', 'c', 'e'} In [12]: i|v Out[12]: {'a', 'b', 'c', 'd', 'dd', 'e'} |
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