python之排列组合测试

# test permutations and combinations import itertools as itfor i in it.combinations('abcd',2): print (i)for j in it.combinations('123456',4): print (j)for k in it.permutations('ABCDEF',2): print (k)for m in it.product('ZXY','1234'): print (m)lists = ['a','b','c']print (list(itertools.permutations(lists,2)))#排列，和顺序有关print ('='*60)print (list(itertools.combinations(lists,2)))#组合，和顺序无关