diff --git a/src/ez_address_parser/address_parser.py b/src/ez_address_parser/address_parser.py
index 66b5dc3..c625d61 100644
--- a/src/ez_address_parser/address_parser.py
+++ b/src/ez_address_parser/address_parser.py
@@ -4,7 +4,7 @@
 
 import sklearn_crfsuite
 
-from .features import transform, load_data
+from .features import load_data, transform
 from .utils import tokenize
 
 
diff --git a/src/ez_address_parser/features.py b/src/ez_address_parser/features.py
index 57804ef..f7518dc 100644
--- a/src/ez_address_parser/features.py
+++ b/src/ez_address_parser/features.py
@@ -1,4 +1,5 @@
 from string import digits
+
 from .constants import direction_terms, street_types, unit_designators
 from .utils import tokenize
 
diff --git a/src/ez_address_parser/utils.py b/src/ez_address_parser/utils.py
index 1ff90aa..b78e2b0 100644
--- a/src/ez_address_parser/utils.py
+++ b/src/ez_address_parser/utils.py
@@ -6,4 +6,4 @@
 
 def tokenize(s):
     s = s.replace("#", " # ")
-    return [token for token in split(fr"[{puncts}\s]+", s) if token]
+    return [token for token in split(rf"[{puncts}\s]+", s) if token]
diff --git a/tests/test_address_parser.py b/tests/test_address_parser.py
index 267f7e2..864666b 100644
--- a/tests/test_address_parser.py
+++ b/tests/test_address_parser.py
@@ -1,4 +1,4 @@
-from unittest.mock import patch, Mock
+from unittest.mock import Mock, patch
 
 import pytest