fix circelei

.circleci/config.yml

@@ -30,7 +30,7 @@ jobs:
       - run:
           name: install dependencies
           command: |
-            sudo python -m pip install --upgrade pip setuptools wheel
+            sudo python -m pip install --upgrade pip setuptools wheel mock pytest
             sudo python -m pip install -r requirements.txt
             sudo python -m pip install --upgrade pycodestyle pyflakes coverage tox codacy-coverage virtualenv
 

tests/beembase/test_bip38.py

+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
 import unittest
 
 from beembase.account import PrivateKey

tests/beembase/test_memo.py

 # This Python file uses the following encoding: utf-8
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
 from builtins import bytes
 from builtins import chr
 from builtins import range

tests/beembase/test_transactions.py

+from __future__ import absolute_import
+from __future__ import division
 from __future__ import print_function
+from __future__ import unicode_literals
 from builtins import bytes
 from builtins import chr
 from builtins import range