thin python: Decimal data type didn't match with others clients

IgniteClient = require('apache-ignite-client');
IgniteClientConfiguration = IgniteClient.IgniteClientConfiguration;
const Decimal = IgniteClient.Decimal;
const ObjectType = IgniteClient.ObjectType;

ENDPOINT = '127.0.0.1:10800';

igniteClient = new IgniteClient();

async function start() {
    await igniteClient.connect(new IgniteClientConfiguration(ENDPOINT));
    try {

        cache = (await igniteClient.getOrCreateCache("JS_DECIMAL"))
                    .setKeyType(ObjectType.PRIMITIVE_TYPE.INTEGER)
                    .setValueType(ObjectType.PRIMITIVE_TYPE.DECIMAL);
        await cache.put(1, new Decimal('7.7'));

    } finally {
        igniteClient.disconnect();
    }
}

start();

from pyignite import Client
from pyignite.datatypes import *

client = Client()
client.connect('127.0.0.1', 10800)
cache = client.get_or_create_cache("JS_DECIMAL")
print(str(cache.get(1, key_hint=IntObject)))

Traceback (most recent call last):
  File get_value_JS_DECIMAL.py", line 7, in <module>
    print(str(cache.get(1, key_hint=IntObject)))
  File "[ignite_src]/platforms/python/pyignite/utils.py", line 163, in ste_wrapper
    result = fn(*args, **kwargs)
  File "[ignite_src]/platforms/python/pyignite/cache.py", line 200, in get
    result = cache_get(self._client, self._cache_id, key, key_hint=key_hint)
  File "[ignite_src]/platforms/python/pyignite/api/key_value.py", line 107, in cache_get
    ('value', AnyDataObject),
  File "[ignite_src]/platforms/python/pyignite/queries/__init__.py", line 291, in perform
    result.value = response_struct.to_python(response)
  File "[ignite_src]/platforms/python/pyignite/queries/__init__.py", line 96, in to_python
    *args, **kwargs
  File "[ignite_src]/platforms/python/pyignite/datatypes/internal.py", line 288, in to_python
    return data_class.to_python(ctype_object)
  File "[ignite_src]/platforms/python/pyignite/datatypes/standard.py", line 183, in to_python
    result = decimal.Decimal(data.decode(PROTOCOL_STRING_ENCODING))
decimal.InvalidOperation: [<class 'decimal.ConversionSyntax'>]

 
from pyignite import Client
from pyignite.datatypes import *
from decimal import Decimal
client = Client()
client.connect('127.0.0.1', 10800)
cache = client.get_or_create_cache("PY_DECIMAL")
cache.put(1, Decimal('7.7'), key_hint=IntObject, value_hint=DecimalObject)

IgniteClient = require('apache-ignite-client');
IgniteClientConfiguration = IgniteClient.IgniteClientConfiguration;
const ObjectType = IgniteClient.ObjectType;

ENDPOINT = '127.0.0.1:10800';

igniteClient = new IgniteClient();

async function start() {
    await igniteClient.connect(new IgniteClientConfiguration(ENDPOINT));
    try {
        cache = (await igniteClient.getOrCreateCache("PY_DECIMAL"))
                    .setKeyType(ObjectType.PRIMITIVE_TYPE.INTEGER);
        console.log(await cache.get(1));
    } finally {
        igniteClient.disconnect();
    }
}

start();