regex - 基于多个列表中存在的单词的关键字检查

Question

我有一本类似的字典：

countries = ["usa", "france", "japan", "china", "germany"]
fruits = ["mango", "apple", "passion-fruit", "durion", "bananna"]

cf_dict = {k:v for k,v in zip(["countries", "fruits"], [countries, fruits])}

我也有一个类似的字符串列表：

docs = ["mango is a fruit that is very different from Apple","I like to travel, last year I was in Germany but I like France.it was lovely"]

我想检查docs并查看每个字符串是否包含anycf_dict 中任何列表（cf_dict 的值是列表）中的关键字，如果它们存在则返回该字符串的对应key（基于值）（字符串在文档中）作为输出。

例如，如果我检查列表docs，输出将是 [ fruits, countries]

类似于此答案的内容，但这仅检查一个列表，但是，我想检查多个列表。

标签： regexstringpython-3.xdictionarypattern-matching

Answer 1

如果字符串与多个列表中的值匹配（例如'apple grows in USA'应该映射到{'fruits', 'countries'}），则以下返回集合的字典。

print({s: {k for k, l in cf_dict.items() for w in l if w in s.lower()} for s in docs})

这输出：

{'mango is a fruit that is very different from Apple': {'fruits'}, 'I like to travel, last year I was in Germany but I like France.it was lovely': {'countries'}}