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数据分析 Tips 获取列表元素的 index 如果知道元素,可以使用 .index 方法就行: a = ["a","b","c"] a.index("a") 如果是一个逻辑值的列表,判断 TRUE 的位置: >>> t = [False, False, False, False, True, True, False, True, False, False, False, False, False, False, False, False] >>> [i for i, x in enumerate(t) if x] [4, 5, 7] 对于大的列表,可以使用 itertools 中的 compress 方法: >>> from itertools import compress >>> list(compress(xrange(len(t)), t)) [4, 5, 7] >>> t = t*1000 >>> %timeit [i for i, x in enumerate(....
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