Remove common suffix of several strings

common_suffix.py

from os.path import commonprefix

def common_suffix(titles):
    """ Return the common suffix of all the strings contained in the
        argument list. 

        :param titles: a list of strings

        Example:
        >>> titles = [u'Homepage | wondercity', u'Page 1 | wondercity']
        >>> common_suffix(titles)
            u' | wondercity'
    """
    return commonprefix([title[::-1] for title in titles])[::-1]