human
Here's a good function header given the following:
I wrote the below code

    def _format(s):
        if ((s == '') or (s == 'None')):
            return None
        if s.lstrip('-').isdigit():
            return int(s)
        try:
            return float(s)
        except:
            return s
    if query:
        query = query.lstrip('?').split('&')
        query = ((kv.split('=') + [None])[:2] for kv in query)
        query = ((u(urllib.unquote_plus(bytestring(k))), _format(u(urllib.unquote_plus(bytestring(v))))) for (k, v) in query if (k != ''))
        return dict(query)
    return {}

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

def urldecode(query):