查找与字符串完全匹配的字符串 [英] finding an exact match for string

问题描述

我使用以下函数查找字符串中单词的完全匹配.

I used the following function to find the exact match for words in a string.

def exact_Match(str1, word):
    result = re.findall('\\b'+word+'\\b', str1, flags=re.IGNORECASE)
    if len(result)>0:
        return True
    else:
        return False

exact_Match(str1, word)

但是当"award"和"award-winning"这两个词仅应在以下字符串中获奖时，我得到一个完全匹配的词.

But I get an exact match for both words "award" and "award-winning" when it only should be award-winning for the following string.

str1 = "award-winning blueberries"
word1 = "award"
word2 = "award-winning"

我如何才能使re.findall将整个单词与连字符和其他标点符号匹配?

How can i get it such that re.findall will match whole words with hyphens and other punctuations?

推荐答案

设置您自己的单词边界:

Make your own word-boundary:

def exact_Match(phrase, word):
    b = r'(\s|^|$)' 
    res = re.match(b + word + b, phrase, flags=re.IGNORECASE)
    return bool(res)

从此处复制粘贴到我的解释器:

copy-paste from here to my interpreter:

>>> str1 = "award-winning blueberries"
>>> word1 = "award"
>>> word2 = "award-winning"
>>> exact_Match(str1, word1)
False
>>> exact_Match(str1, word2)
True

实际上，强制转换为bool是不必要的，根本没有帮助.没有它，功能会更好:

Actually, the casting to bool is unnecessary and not helping at all. The function is better off without it:

def exact_Match(phrase, word):
    b = r'(\s|^|$)' 
    return re.match(b + word + b, phrase, flags=re.IGNORECASE)

---

注意:exact_Match是非常非常规的大小写.只需将其称为精确匹配"即可.

---

note: exact_Match is pretty unconventional casing. just call it exact_match.

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