diff --git a/src/protean/infra/event_log.py b/src/protean/infra/event_log.py
index 7aa3e336..35c49b77 100644
--- a/src/protean/infra/event_log.py
+++ b/src/protean/infra/event_log.py
@@ -1,7 +1,9 @@
+# Standard Library Imports
 from datetime import datetime
 
+# Protean
 from protean.core.aggregate import BaseAggregate
-from protean.core.field.basic import String, DateTime, Dict
+from protean.core.field.basic import DateTime, Dict, String
 from protean.core.repository.base import BaseRepository
 from protean.globals import current_domain
 
diff --git a/tests/domain_event/elements.py b/tests/domain_event/elements.py
index 99bce092..9a2bf7bf 100644
--- a/tests/domain_event/elements.py
+++ b/tests/domain_event/elements.py
@@ -5,8 +5,8 @@
 from protean.core.domain_event import BaseDomainEvent
 from protean.core.field.basic import Integer, String
 from protean.core.field.embedded import AggregateField
-from protean.globals import current_domain
 from protean.core.unit_of_work import UnitOfWork
+from protean.globals import current_domain
 
 
 class PersonCommand(BaseCommand):
diff --git a/tests/domain_event/tests.py b/tests/domain_event/tests.py
index eb7b6880..129fb807 100644
--- a/tests/domain_event/tests.py
+++ b/tests/domain_event/tests.py
@@ -3,9 +3,9 @@
 
 from mock import patch
 from protean.core.domain_event import BaseDomainEvent
-from protean.infra.event_log import EventLog, EventLogRepository
 from protean.globals import current_domain
 from protean.impl.broker.memory_broker import MemoryBroker
+from protean.infra.event_log import EventLog, EventLogRepository
 from protean.utils import fully_qualified_name
 
 # Local/Relative Imports
diff --git a/tests/field/test_field_types.py b/tests/field/test_field_types.py
index 80e722e7..39983717 100644
--- a/tests/field/test_field_types.py
+++ b/tests/field/test_field_types.py
@@ -8,9 +8,9 @@
 # Protean
 import pytest
 
+from protean.core.aggregate import BaseAggregate
 from protean.core.exceptions import ValidationError
 from protean.core.field.basic import Auto, Boolean, Date, DateTime, Dict, Float, Integer, List, String, Text
-from protean.core.aggregate import BaseAggregate
 
 
 class TestStringField:
diff --git a/tests/impl/model/dict_model/elements.py b/tests/impl/model/dict_model/elements.py
index b0649de6..38e86a29 100644
--- a/tests/impl/model/dict_model/elements.py
+++ b/tests/impl/model/dict_model/elements.py
@@ -9,9 +9,9 @@
 from protean.core.field.basic import Integer, String, Text
 from protean.core.field.embedded import ValueObjectField
 from protean.core.repository.base import BaseRepository
+from protean.core.repository.model import BaseModel
 from protean.core.value_object import BaseValueObject
 from protean.globals import current_domain
-from protean.core.repository.model import BaseModel
 
 
 class Person(BaseAggregate):
diff --git a/tests/impl/model/dict_model/tests.py b/tests/impl/model/dict_model/tests.py
index 75a8095e..b42c0acd 100644
--- a/tests/impl/model/dict_model/tests.py
+++ b/tests/impl/model/dict_model/tests.py
@@ -1,10 +1,10 @@
+# Protean
 import pytest
 
-# Protean
 from protean.impl.repository.dict_repo import DictModel
 
 # Local/Relative Imports
-from .elements import Email, Person, User, Provider, ProviderCustomModel, Receiver
+from .elements import Email, Person, Provider, ProviderCustomModel, Receiver, User
 
 
 class TestModel:
diff --git a/tests/impl/model/elasticsearch_model/elements.py b/tests/impl/model/elasticsearch_model/elements.py
index a8302da3..a1e39296 100644
--- a/tests/impl/model/elasticsearch_model/elements.py
+++ b/tests/impl/model/elasticsearch_model/elements.py
@@ -1,10 +1,11 @@
+# Standard Library Imports
 import re
 
 from collections import defaultdict
 from datetime import datetime
 
-from elasticsearch_dsl import Text, Keyword
-
+# Protean
+from elasticsearch_dsl import Keyword, Text
 from protean.core.aggregate import BaseAggregate
 from protean.core.field.basic import DateTime, Integer, String
 from protean.core.field.basic import Text as ProteanText
diff --git a/tests/impl/model/sqlalchemy_model/postgresql/elements.py b/tests/impl/model/sqlalchemy_model/postgresql/elements.py
index a17c3510..af3c9f74 100644
--- a/tests/impl/model/sqlalchemy_model/postgresql/elements.py
+++ b/tests/impl/model/sqlalchemy_model/postgresql/elements.py
@@ -4,14 +4,13 @@
 from collections import defaultdict
 from datetime import datetime
 
-from sqlalchemy import Column, Text
-
 # Protean
 from protean.core.aggregate import BaseAggregate
 from protean.core.field.basic import DateTime, Integer, String
 from protean.core.field.embedded import ValueObjectField
 from protean.core.repository.model import BaseModel
 from protean.core.value_object import BaseValueObject
+from sqlalchemy import Column, Text
 
 
 class Person(BaseAggregate):
diff --git a/tests/impl/model/sqlalchemy_model/postgresql/test_model.py b/tests/impl/model/sqlalchemy_model/postgresql/test_model.py
index 4501bdc5..4f6b2077 100644
--- a/tests/impl/model/sqlalchemy_model/postgresql/test_model.py
+++ b/tests/impl/model/sqlalchemy_model/postgresql/test_model.py
@@ -1,6 +1,6 @@
+# Protean
 import pytest
 
-# Protean
 from protean.impl.repository.sqlalchemy_repo import SqlalchemyModel
 
 # Local/Relative Imports
diff --git a/tests/impl/model/sqlalchemy_model/sqlite/elements.py b/tests/impl/model/sqlalchemy_model/sqlite/elements.py
index a17c3510..af3c9f74 100644
--- a/tests/impl/model/sqlalchemy_model/sqlite/elements.py
+++ b/tests/impl/model/sqlalchemy_model/sqlite/elements.py
@@ -4,14 +4,13 @@
 from collections import defaultdict
 from datetime import datetime
 
-from sqlalchemy import Column, Text
-
 # Protean
 from protean.core.aggregate import BaseAggregate
 from protean.core.field.basic import DateTime, Integer, String
 from protean.core.field.embedded import ValueObjectField
 from protean.core.repository.model import BaseModel
 from protean.core.value_object import BaseValueObject
+from sqlalchemy import Column, Text
 
 
 class Person(BaseAggregate):
diff --git a/tests/impl/model/sqlalchemy_model/sqlite/test_model.py b/tests/impl/model/sqlalchemy_model/sqlite/test_model.py
index 4ec9fca0..750c7bea 100644
--- a/tests/impl/model/sqlalchemy_model/sqlite/test_model.py
+++ b/tests/impl/model/sqlalchemy_model/sqlite/test_model.py
@@ -1,6 +1,6 @@
+# Protean
 import pytest
 
-# Protean
 from protean.impl.repository.sqlalchemy_repo import SqlalchemyModel
 
 # Local/Relative Imports