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

    if _PY3:
        if isinstance(s, binary_type):
            s = s.decode('utf-8')
    elif (isinstance(s, str) and (HAS_UTF8.search(s) is not None)):
        s = s.decode('utf-8')
    def replace(match):
        return ESCAPE_DCT[match.group(0)]
    return ((_q + ESCAPE.sub(replace, s)) + _q)

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

def encode_basestring(s, _PY3=PY3, _q=u('"')):