diff --git a/tests/backend/test_connection.py b/tests/backend/test_connection.py
index 3efdb7e..10d9b3c 100644
--- a/tests/backend/test_connection.py
+++ b/tests/backend/test_connection.py
@@ -11,7 +11,6 @@ def test_get_connection_raises_a_configuration_error(monkeypatch):
     from planetmint.backend.localmongodb.connection import LocalMongoDBConnection
     from planetmint.backend.tarantool.connection import TarantoolDBConnection
     from transactions.common.exceptions import ConfigurationError
-    
 
     with pytest.raises(ConnectionError):
         LocalMongoDBConnection("localhost", "1337", "mydb", "password")
diff --git a/tests/tendermint/test_lib.py b/tests/tendermint/test_lib.py
index f4133b9..b9ac8c7 100644
--- a/tests/tendermint/test_lib.py
+++ b/tests/tendermint/test_lib.py
@@ -5,10 +5,11 @@
 
 
 import os
-#from unittest.mock import patch
-#from planetmint.transactions.types.assets.create import Create
-#from planetmint.transactions.types.assets.transfer import Transfer
-#from hashlib import sha3_256
+
+# from unittest.mock import patch
+# from planetmint.transactions.types.assets.create import Create
+# from planetmint.transactions.types.assets.transfer import Transfer
+# from hashlib import sha3_256
 
 import pytest
 
diff --git a/tests/test_core.py b/tests/test_core.py
index 84e9183..914dbb4 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -5,20 +5,20 @@
 
 import pytest
 
-#from tendermint.abci import types_pb2 as types
-#from tendermint.crypto import keys_pb2
+# from tendermint.abci import types_pb2 as types
+# from tendermint.crypto import keys_pb2
 #
-#from planetmint import App
-#from planetmint.backend import query
-#from planetmint.transactions.common.crypto import generate_key_pair
-#from planetmint.core import OkCode, CodeTypeError, rollback
-#from planetmint.transactions.types.elections.election import Election
-#from planetmint.lib import Block
-#from planetmint.transactions.types.elections.chain_migration_election import ChainMigrationElection
-#from planetmint.upsert_validator.validator_election import ValidatorElection
-#from planetmint.backend.exceptions import ConnectionError
-#from planetmint.upsert_validator.validator_utils import new_validator_set
-#from planetmint.tendermint_utils import public_key_to_base64
+# from planetmint import App
+# from planetmint.backend import query
+# from planetmint.transactions.common.crypto import generate_key_pair
+# from planetmint.core import OkCode, CodeTypeError, rollback
+# from planetmint.transactions.types.elections.election import Election
+# from planetmint.lib import Block
+# from planetmint.transactions.types.elections.chain_migration_election import ChainMigrationElection
+# from planetmint.upsert_validator.validator_election import ValidatorElection
+# from planetmint.backend.exceptions import ConnectionError
+# from planetmint.upsert_validator.validator_utils import new_validator_set
+# from planetmint.tendermint_utils import public_key_to_base64
 from planetmint.version import __tm_supported_versions__
 from transactions.types.assets.create import Create
 from transactions.types.assets.transfer import Transfer
diff --git a/tests/web/test_outputs.py b/tests/web/test_outputs.py
index 2a87b7e..03ff5a2 100644
--- a/tests/web/test_outputs.py
+++ b/tests/web/test_outputs.py
@@ -4,10 +4,11 @@
 # Code is Apache-2.0 and docs are CC-BY-4.0
 
 import pytest
-#from unittest.mock import MagicMock, patch
-#from planetmint.transactions.common import crypto
-#from planetmint.transactions.types.assets.create import Create
-#from planetmint.transactions.types.assets.transfer import Transfer
+
+# from unittest.mock import MagicMock, patch
+# from planetmint.transactions.common import crypto
+# from planetmint.transactions.types.assets.create import Create
+# from planetmint.transactions.types.assets.transfer import Transfer
 
 from transactions.types.assets.create import Create
 from transactions.types.assets.transfer import Transfer
diff --git a/tests/web/test_transactions.py b/tests/web/test_transactions.py
index 19f9158..6474d49 100644
--- a/tests/web/test_transactions.py
+++ b/tests/web/test_transactions.py
@@ -12,10 +12,10 @@ from cryptoconditions import Ed25519Sha256
 from ipld import multihash, marshal
 from hashlib import sha3_256
 
-#from planetmint.transactions.common import crypto
-#from planetmint.transactions.types.assets.create import Create
-#from planetmint.transactions.types.assets.transfer import Transfer
-#from planetmint.transactions.common.transaction_mode_types import (
+# from planetmint.transactions.common import crypto
+# from planetmint.transactions.types.assets.create import Create
+# from planetmint.transactions.types.assets.transfer import Transfer
+# from planetmint.transactions.common.transaction_mode_types import (
 from transactions.common import crypto
 from transactions.common.transaction import Transaction
 from transactions.types.assets.create import Create