[tests] fix tox testing and dependencies

bitsharesapi/exceptions.py

@@ -30,3 +30,7 @@ class NoMethodWithName(RPCError):
 
 class UnhandledRPCError(RPCError):
     pass
+
+
+class NumRetriesReached(Exception):
+    pass

bitsharesapi/websocket.py

@@ -5,7 +5,7 @@ import json
 import logging
 from itertools import cycle
 from threading import Thread
-
+from .exceptions import NumRetriesReached
 from events import Events
 import websocket
 
@@ -13,11 +13,6 @@ log = logging.getLogger(__name__)
 logging.basicConfig(level=logging.DEBUG)
 
 
-
-class NumRetriesReached(Exception):
-    pass
-
-
 class BitSharesWebsocket(Events):
     __events__ = [
         'on_tx',

tests/test_memo.py

 import unittest
 import os
 from pprint import pprint
-from graphenebase.account import BrainKey, Address, PublicKey, PrivateKey
-from graphenebase.memo import (
+from bitsharesbase.account import BrainKey, Address, PublicKey, PrivateKey
+from bitsharesbase.memo import (
     get_shared_secret,
     _pad,
     _unpad,