human
I wrote the below code

    def _clientfactory(url, *args, **kwargs):
        url = to_unicode(url)
        timeout = kwargs.pop('timeout', 0)
        f = client.ScrapyHTTPClientFactory(Request(url, *args, **kwargs), timeout=timeout)
        f.deferred.addCallback((response_transform or (lambda r: r.body)))
        return f
    from twisted.web.client import _makeGetterFactory
    return _makeGetterFactory(to_bytes(url), _clientfactory, contextFactory=contextFactory, *args, **kwargs).deferred

What's a good function header?
 ... Here's a good function header?
assistant
#Here's a good function header.

def getPage(url, contextFactory=None, response_transform=None, *args, **kwargs):