There should be, but there isn't. imo Page('en', ':Nomad: From Islam to America') should just work (but it doesn't). Even this fails:
>>> catlib.Category('en', 'Books by Ayaan Hirsi Ali').articlesList()
Getting [[Category:Books by Ayaan Hirsi Ali]]...
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "catlib.py", line 431, in articlesList
for article in self.articles(recurse, sortby=sortby, sortdir=sortdir):
File "catlib.py", line 416, in articles
sortby=sortby, sortdir=sortdir):
File "catlib.py", line 169, in _getContentsNaive
sortby=sortby, sortdir=sortdir):
File "catlib.py", line 239, in _parseCategory
yield ARTICLE, wikipedia.Page(self.site(), memb['title'], defaultNamespace=memb['ns'])
File "wikipedia.py", line 374, in __init__
% (title, self._site, familyName))
pywikibot.exceptions.NoPage: Nomad: From Islam to America is not a local page on wikipedia:en, and the nomad family is
not supported by PyWikipediaBot!