问题
I'm looking for a regex to match hyphenated words in python.
The closest I've managed to get is: '\w+-\w+[-w+]*'
text = "one-hundered-and-three- some text foo-bar some--text"
hyphenated = re.findall(r'\w+-\w+[-\w+]*',text)
which returns list ['one-hundered-and-three-', 'foo-bar'].
This is almost perfect except for the trailing hyphen after 'three'. I only want the additional hyphen if followed by a 'word'. i.e. instead of the '[-\w+]*' I need something like '(-\w+)*' which I thought would work, but doesn't (it returns ['-three, '']). i.e. something that matches |word followed by hyphen followed by word followed by hyphen_word zero or more times|.
回答1:
Try this:
re.findall(r'\w+(?:-\w+)+',text)
Here we consider a hyphenated word to be:
- a number of word chars
- followed by any number of:
- a single hyphen
- followed by word chars
来源：https://stackoverflow.com/questions/8383213/python-regex-for-hyphenated-words