python，从列表中删除字符串中的单词

Question

我想删除字符串中的单词，即列表中的单词或“种子”单词，

示例:

query = "LK936033.1 Babesia assembly 454hybrid_PBjelly scaffold Contig1323  7"
seeds = ["assembly","454","scaffold","contig"]

预期结果:

"LK936033.1 Babesia 7"

我找到了一种删除单词的方法，如下所示:

' '.join([i for i in query.split() if i not in seeds])

但此方法仅从种子列表中删除确切单词，而不是包含种子的单词。

Answer 1

您需要扩展您的测试；使用 any() function为了提高效率:

' '.join([i for i in query.split() if not any(w in i.lower() for w in seeds)])

any(w in i.lower() for w in seeds) test 使用生成器表达式来测试当前单词是否包含任何种子词(小写)；它只会评估找到匹配项的最少测试次数。

演示:

>>> query = "LK936033.1 Babesia assembly 454hybrid_PBjelly scaffold Contig1323  7"
>>> seeds = ["assembly","454","scaffold","contig"]
>>> ' '.join([i for i in query.split() if not any(w in i.lower() for w in seeds)])
'LK936033.1 Babesia 7'