format code

app/io/writer.py

@@ -1,6 +1,5 @@
 from abc import ABCMeta, abstractmethod
 from pathlib import Path
-from typing import Callable
 
 from app import utils
 

app/tests/utils.py

@@ -1,4 +1,4 @@
-from app.config import ConverterOptions, Configurator
+from app.config import Configurator, ConverterOptions
 
 
 def make_fake_configurator(converter: str, converter_options: ConverterOptions):

app/tests/utils_test.py

@@ -1,10 +1,7 @@
 import pytest
 
-from app.utils import (
+from app.utils import (guard_against_none, guard_against_none_or_empty_str,
-    guard_against_none,
+                       key_error_silence)
-    guard_against_none_or_empty_str,
-    key_error_silence,
-)
 
 
 def test_key_error_silence():