Finding Acronyms Using Regex In Python
问题 I'm trying to use regex in Python to match acronyms separated by periods. I have the following code: import re test_string = "U.S.A." pattern = r'([A-Z]\.)+' print re.findall(pattern, test_string) The result of this is: ['A.'] I'm confused as to why this is the result. I know + is greedy, but why is are the first occurrences of [A-Z]\. ignored? 回答1: The (...) in regex creates a group. I suggest changing to: pattern = r'(?:[A-Z]\.)+' 回答2: Description This regex will: capture all the acronyms