Efficiently split a string using multiple separators and retaining each separator?

Question

I need to split strings of data using each character from string.punctuation and string.whitespace as a separator.

Furthermore, I need for the

Answer 1

My take:

from string import whitespace, punctuation
import re

pattern = re.escape(whitespace + punctuation)
print re.split('([' + pattern + '])', 'now is the winter of')