Python 3.6版cssutils.getURL错误：生成器对象getUrls

Question

我得到了一个生成器对象错误，而不是我试图提取的css url。有人能帮忙解决吗？你知道吗

>>> import cssutils
>>> cssutils.getUrls('http://4nprofessionals.com/css/style.css')
    <generator object getUrls at 0x000001647F5FC0A0>
>>> css = cssutils.getUrls('http://4nprofessionals.com/css/style.css')
>>> print (css)
    <generator object getUrls at 0x000001647F6B4BF8>