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

    class TranslateParser(TokenParser, ):
        def top(self):
            value = self.value()
            if (value[0] == "'"):
                m = re.match("^'([^']+)'(\\|.*$)", value)
                if m:
                    value = ('"%s"%s' % (m.group(1).replace('"', '\\"'), m.group(2)))
                elif (value[(-1)] == "'"):
                    value = ('"%s"' % value[1:(-1)].replace('"', '\\"'))
            noop = False
            asvar = None
            message_context = None
            while self.more():
                tag = self.tag()
                if (tag == 'noop'):
                    noop = True
                elif (tag == 'context'):
                    message_context = parser.compile_filter(self.value())
                elif (tag == 'as'):
                    asvar = self.tag()
                else:
                    raise TemplateSyntaxError('Only    options    for    \'trans\'    are    \'noop\',    \'context    "xxx"\',    and    \'as    VAR\'.')
            return (value, noop, asvar, message_context)
    (value, noop, asvar, message_context) = TranslateParser(token.contents).top()
    return TranslateNode(parser.compile_filter(value), noop, asvar, message_context)

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

@register.tag('trans')
def do_translate(parser, token):