我已经是按照示例的格式了，分账金额参数也确定是int，我已经试了各种方法了，请帮忙指点一下哪里有错误，着急。。。请帮忙，谢谢！

以下是相关代码：

url    = "https://api.mch.weixin.qq.com/secapi/pay/multiprofitsharing"
params = {
    "appid" : APP_ID,
    "mch_id": WECHAT_MCH_ID,
    "sub_appid" : sub_appid,
    "sub_mch_id": sub_mch_id,
    "nonce_str": nonce_str_gen(),
    "key": WECHAT_MCH_KEY,
}
key = WECHAT_MCH_KEY
sign_str       = params_sign_HMAC_SHA256(params, key)
params['sign'] = sign_str
params['sign_type'] = 'HMAC-SHA256'
notify_res = notify_res
nPos = notify_res.find('transaction_id')
if nPos == -1:
    dbg('no transaction_id')
else:
    transaction_id = notify_res[nPos+18:len(notify_res)-2]
    params['transaction_id'] = transaction_id
params['out_order_no'] = out_order_no
receivers = [
    {'amount': 20, 'type': 'PERSONAL_WECHATID', 'account': 'jiangff666', 'description': 'agent_id:39'},
    {'amount': 20, 'type': 'PERSONAL_WECHATID', 'account': 'chargerqiao', 'description': 'agent_id:41'},
    {'amount': 50, 'type': 'PERSONAL_WECHATID', 'account': 'yongkundz', 'description': 'agent_id:42'}
]
params['receivers'] = receivers
xml_data  = dict_to_xml(params).encode('utf-8')
cert = (
    os.path.join(wechat_config['key_path'], 'apiclient_cert.pem'),
    os.path.join(wechat_config['key_path'], 'apiclient_key.pem'),
)
dbg(xml_data)
r         = requests.post(url, data=xml_data, cert=cert)
dbg(r)

以下是打印出的日志：

DEBUG:root:b"<xml>\n\t<transaction_id>4200000336201906154647921096</transaction_id>\n\t<receivers>[{'description': 'agent_id:39', 'account': 'jiangff666', 'type': 'PERSONAL_WECHATID', 'amount': 20}, {'description': 'agent_id:41', 'account': 'chargerqiao', 'type': 'PERSONAL_WECHATID', 'amount': 20}, {'description': 'agent_id:42', 'account': 'yongkundz', 'type': 'PERSONAL_WECHATID', 'amount': 50}]</receivers>\n\t<appid>wxfa5ecad659af258a</appid>\n\t<out_order_no>44201906151431350548</out_order_no>\n\t<sub_appid>wxebf6dac1e54f5b17</sub_appid>\n\t<sign>FBA8F708F25838C5B62884DDCC904C4810B7923BA684032144BBF9C6A31B8E62</sign>\n\t<mch_id>1533360331</mch_id>\n\t<nonce_str>NPXQMQEGZ0DR7EP3</nonce_str>\n\t<sub_mch_id>1534018591</sub_mch_id>\n\t<key>qiaoluoekejf9er3k4390234823o4p11</key>\n\t<sign_type>HMAC-SHA256</sign_type>\n</xml>\n"

INFO:requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): api.mch.weixin.qq.com

DEBUG:requests.packages.urllib3.connectionpool:"POST /secapi/pay/multiprofitsharing HTTP/1.1" 200 127

DEBUG:root:<Response [200]>

DEBUG:root:{'return_msg': '分账接收方列表格式错误', 'return_code': 'FAIL'}

盼指点，感谢！