ToolzPython 函数式编程工具箱
Toolz 是 Python 的函数式编程工具箱。Toolz 支持 Python 2.6+ 和 Python 3.3+。
Toolz 的实现包括三部分:
-
itertoolz
,for operations on iterables. 例如:groupby
,unique
,interpose
, -
functoolz
, for higher-order functions. 例如:memoize
,curry
,compose
-
dicttoolz
, for operations on dictionaries. 例如:assoc
,update-in
,merge
.
示例:
>>> def stem(word): ... """ Stem word to primitive form """ ... return word.lower().rstrip(",.!:;'-\"").lstrip("'\"") >>> from toolz import compose, frequencies, partial >>> wordcount = compose(frequencies, partial(map, stem), str.split) >>> sentence = "This cat jumped over this other cat!" >>> wordcount(sentence) {'this': 2, 'cat': 2, 'jumped': 1, 'over': 1, 'other': 1}
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