human
I wrote the below code

    encoding = (obj.encoding if isinstance(obj, TextResponse) else (encoding or 'utf-8'))
    def _getrow(csv_r):
        return [str_to_unicode(field, encoding) for field in csv_r.next()]
    lines = StringIO(body_or_str(obj, unicode=False))
    if delimiter:
        csv_r = csv.reader(lines, delimiter=delimiter)
    else:
        csv_r = csv.reader(lines)
    if (not headers):
        headers = _getrow(csv_r)
    while True:
        row = _getrow(csv_r)
        if (len(row) != len(headers)):
            log.msg(('ignoring    row    %d    (length:    %d,    should    be:    %d)' % (csv_r.line_num, len(row), len(headers))), log.WARNING)
            continue
        else:
            (yield dict(zip(headers, row)))

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

def csviter(obj, delimiter=None, headers=None, encoding=None):