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1 #演示itertools.accumulate生成器函数 2 3 import itertools 4 import operator 5 6 7 sample = [5, 4, 2, 8, 7, 6, 3, 0, 9, 1] 8 9 e1 = list(itertools.accumulate(sample)) 10 print("默认求累计和:", e1) #[5, 9, 11, 19, 26, 32, 35, 35, 44, 45] 11 12 e2= list(itertools.accumulate(sample, min)) 13 print("传递min函数,求累计结果:", e2) #[5, 4, 2, 2, 2, 2, 2, 0, 0, 0] 14 15 e3 = list(itertools.accumulate(sample, max)) 16 print("传递max函数,求累计结果:", e3) #[5, 5, 5, 8, 8, 8, 8, 8, 9, 9] 17 18 19 e4 = list(itertools.accumulate(sample, operator.mul)) 20 print("传递operator.mul函数,求累计结果:", e4) #[5, 20, 40, 320, 2240, 13440, 40320, 0, 0, 0] 21 22 e5 = list(itertools.accumulate(range(1,11), operator.mul)) 23 print("累计结果:", e5) # [1, 2, 6, 24, 120, 720, 5040, 40320, 362880, 3628800]
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