テキストファイルにpayloadを設定してpost送信

テキストファイルを準備する(urlの末尾、payload)

update-employee,{"user_id":"9991","name_sei":"山田","name_mei":"花子"}
update-employee,{"user_id":"9992","name_sei":"山田","name_mei":"太郎"}

payloadの送信

try:
    datalist = []
    txtfile = r'<post.txtのフルパス>'
    with open(txtfile, 'r', encoding="utf-8") as f:
        while True:
            data = f.readline()
            if not data:
                break
            dlist = data.split(',')
            datalist.append((dlist[0], data.replace(
                dlist[0] + ',', '').replace('\n', '')))
    urlbase = '<エンドポイント(末尾の手前まで)>'
    headers = {
        'Content-Type': 'application/json'
    }
    for data in datalist:
        url = urlbase + data[0]
        payload = data[1]
        req = urllib.request.Request(
            url, payload.encode(), headers, 'POST')
        with urllib.request.urlopen(req) as res:
            body = res.read()
except Exception as e:
    print(e)