Use F5 REST API Python SDK to update an external datagroup

Thanks Satoshi! I was able to employ patch as you suggested using this Python code:

def update_edg_file(rq, url, fileserver, newfilename, dgfname):
    path = fileserver + "/" + newfilename
    payload = {}
    payload['sourcePath'] = path
 
    req = '{}/sys/file/data-group/{}'.format(url, dgfname)
    resp = rq.patch(req, json.dumps(payload))
    print("update_edg_file, name: {},  PATCH response: {}".format(dgfname, resp))
 
# in main
...
    url_base = 'https://%s/mgmt/tm' % hostname
    rs = requests.session()
    rs.auth = (username, password)
    rs.verify = False
    rs.headers.update({'Content-Type':'application/json'})
    ....
    update_edg_file(rs, url_base, external_file_server, filename, edg_file_name)

The update is pretty quick.