Type Not Found error on python soap call using suds library

[wellborn]

i'm converting my php code into python code

here is my php code

$info = new StdClass();
$info->username = 'myUsername'; //Required
$info->password = 'myPassword';

require_once 'nusoap.php';
$client = new nusoap_client('http://myWebServiceAddress?wsdl', true);
$str = $client->call("login", array('loginRequest' => $info));

$contextinfo = new stdClass();
$contextinfo->data = new stdClass();
$contextinfo->data->entry = array('key' => 'SESSION_ID', 'value' => $str['return']);

$requestinfo = new StdClass();
$requestinfo->refNumList = "RefNum";

$str1 = $client->call("verifyTransaction", array('context' => $contextinfo, 'verifyRequest' => $requestinfo));

echo $str1['return']['verifyResponseResults']['amount'];

and when i convert it to python i got this error Exception Value:

Type not found: 'value'

Exception Location: venv\lib\site-packages\suds\mx\literal.py in start, line 87

here is my python code

wsdl_url = WebServiceUrl
schema_url = 'http://www.type-applications.com/character_set/'
schema_import = Import(schema_url)
schema_doctor = ImportDoctor(schema_import)

client = Client(url=wsdl_url, doctor=schema_doctor)

info = {
    "username":int(username),
    "password":int(password)
}
params = {
    'loginRequest':info
}

result = client.service.login(**params)

entry = {
    'key':str('SESSION_ID'),
    'value':str(result)
}
contextinfo = {
    'data':entry
}

requestinfo = {
    "refNumList":RefNum
}
params1 = {
    'context':contextinfo,
    'verifyRequest':requestinfo
}

result = client.service.verifyTransaction(**params1)

first soap calls works well ('client.service.login(**params)') and result has true value

but i got error on second soap call(client.service.verifyTransaction(**params1))

i used suds.Client for soap call and used suds.xsd.doctor for fixing type not found error, but doctor cant fix it for me

[micseydel]

You need to provide runnable code (which includes imports) and the full stack trace.