Fix isort errors

testproj/snippets/serializers.py

@@ -1,15 +1,17 @@
-import rest_framework
 from decimal import Decimal
 
+import rest_framework
 from django.contrib.auth import get_user_model
 from packaging.version import Version
+from rest_framework import serializers
+
+from snippets.models import LANGUAGE_CHOICES, STYLE_CHOICES, Snippet, SnippetViewer
+
 if Version(rest_framework.__version__) < Version('3.10'):
     from rest_framework.compat import MaxLengthValidator, MinValueValidator
 else:
     from django.core.validators import MaxLengthValidator, MinValueValidator
-from rest_framework import serializers
 
-from snippets.models import LANGUAGE_CHOICES, STYLE_CHOICES, Snippet, SnippetViewer
 
 
 class LanguageSerializer(serializers.Serializer):