有没有办法在 python 中使用正则表达式找到完全匹配而不是 substring 匹配？

Question

given a sentence like this Sent = "ball bearing robertshaw 20" i am using a pattern "roberts|robertshaw" and would like the result to be "robertshaw" but getting only "roberts"

import re
sent = "ball bearing robertshaw 20"
pattrn = "roberts|robertshaw"

re.findall(pattrn,sent)

Answer 1

Use word boundaries:

\b(?:roberts|robertshaw)\b

Demo