正则表达式-如何捕获许多单词

Question

I have a simple regex question:

Given a string like "test-class" what regex should I use to get ['test','class'] (in python context)

Answer 1

You don't need a regex; just use str.split() :

>>> 'test-class'.split('-')
['test', 'class']

A regex solution is still to split:

>>> import re
>>> re.split(r'-', 'test-class')
['test', 'class']

Answer 2

"(\w+)"g

example here : http://regex101.com/r/mV9cE2

\\w will match an return group of all alphanumeric characters

g modifier: global. All matches (don't return on first match)

Answer 3

([a-zA-Z]*)就足以捕获字符串中的每个单词。

Answer 4

If you are intent on using regex:

In short you define a regex which matches the things you want. Then you use regex.matchall to the string, and you get back the matching parts.

import re
$ s = 'hello-world this 32'
$ results = re.findall(r'[a-zA-Z]*', s)
$ print(results)
['hello', '', 'world', '', 'this', '', '', '', '']
# Now we can filter out the empty results.
$ non_empty_results = [result for result in results if result]
$ print(non_empty_results)
['hello', 'world', 'this']