def cloud_list_task(cookie, tokens, start=<NUM_LIT:0>):
url = '<STR_LIT>'.join([<EOL>const.PAN_URL,<EOL>'<STR_LIT>',<EOL>'<STR_LIT>', tokens['<STR_LIT>'],<EOL>'<STR_LIT>',<EOL>'<STR_LIT>', str(start),<EOL>'<STR_LIT>',<EOL>'<STR_LIT>', util.timestamp(),<EOL>])<EOL>req = net.urlopen(url, headers={'<STR_LIT>': cookie.header_output()})<EOL>if req:<EOL><INDENT>content = req.data<EOL>return json.loads(content.decode())<EOL><DEDENT>else:<EOL><INDENT>return None<EOL><DEDENT>
获取当前离线下载的任务信息

    start - 从哪个任务开始, 从0开始计数, 会获取这50条任务信息