fix wallet unit test

Limit coverage to python 3.6

.circleci/config.yml

@@ -47,7 +47,7 @@ jobs:
           name: run tests
           command: |
             ./cc-test-reporter before-build
-            tox -e py36,pylint
+            tox -e py36
             ./cc-test-reporter after-build --exit-code $?
 
       - deploy:

beem/wallet.py

@@ -262,7 +262,7 @@ class Wallet(object):
             # Try to decode as wif
             PrivateKey(encwif, prefix=self.prefix)
             return encwif
-        except ValueError:
+        except (ValueError, AssertionError):
             pass
         if self.locked():
             raise AssertionError()

tox.ini

 [tox]
-envlist = py{27,34,35,36,37},lint,pyflakes
+envlist = py{27,34,35,36,37}
 skip_missing_interpreters = true
 
 [testenv]
+deps =
+    mock>=2.0.0
+    pytest
+    pytest-mock
+    parameterized
+commands =
+    pytest
+
+[testenv:py36]
 deps =
     mock>=2.0.0
     pytest