writer_text.py 文件源码

def _bytes_text(code_point_iter, quote, prefix=b'', suffix=b''):
    quote_code_point = six.byte2int(quote)
    buf = BytesIO()
    buf.write(prefix)
    buf.write(quote)
    for code_point in code_point_iter:
        if code_point == quote_code_point:
            buf.write(b'\\' + quote)
        elif code_point == six.byte2int(b'\\'):
            buf.write(b'\\\\')
        elif _is_printable_ascii(code_point):
            buf.write(six.int2byte(code_point))
        else:
            buf.write(_escape(code_point))
    buf.write(quote)
    buf.write(suffix)
    return buf.getvalue()