不区分大小写的字典 [英] Case insensitive dictionary

问题描述

我希望我的字典不区分大小写.

I'd like my dictionary to be case insensitive.

我有这个示例代码:

text = "practice changing the color"

words = {'color': 'colour',
        'practice': 'practise'}

def replace(words,text):

    keys = words.keys()

    for i in keys:
        text= text.replace(i ,words[i])
    return  text

text = replace(words,text)

print text

输出 = 练习改变颜色

Output = practise changing the colour

我想要另一个字符串，练习改变颜色"，(其中 Color 以大写开头)也能给出相同的输出.

I'd like another string, "practice changing the Color", (where Color starts with a capital) to also give the same output.

我相信有一种通用的方法可以使用mydictionary[key.lower()] 但我不确定如何最好地将它集成到我现有的代码中.(如果这仍然是一种合理、简单的方法).

I believe there is a general way to convert to lowercase using mydictionary[key.lower()] but I'm not sure how to best integrate this into my existing code. (If this would be a reasonable, simple approach anyway).

推荐答案

如果我理解正确，并且您想要一种以不区分大小写的方式键控字典的方法，一种方法是将 dict 子类化并重载 setter/吸气剂:

If I understand you correctly and you want a way to key dictionaries in a non case-sensitive fashion, one way would be to subclass dict and overload the setter / getter:

class CaseInsensitiveDict(dict):
    def __setitem__(self, key, value):
        super(CaseInsensitiveDict, self).__setitem__(key.lower(), value)

    def __getitem__(self, key):
        return super(CaseInsensitiveDict, self).__getitem__(key.lower())

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