sfmc_post_dataextension.py

def post_to_data_extension(
        accessToken: str, 
        dataExtensionKey: str, 
        items: list
    ) -> requests.Response:
    
    host = "https://www.exacttargetapis.com"
    end_point = "/hub/v1/dataevents/key:{key}/rowset" 
    url = host + end_point.format(key=dataExtensionKey)
    
    headers = {
        "Content-Type": "application/json",
        "Authorization": "Bearer %s" % accessToken
    }
        
    data = items

    req = requests.post(
        url, 
        headers=headers,
        data=json.dumps(data)
    )
        
    return req