Fix isort import sorting and flake8 linting issues

- Run isort to fix import sorting in all files
- Remove unused imports from test_new_features.py
- Add back required DeterministicEncryptedTextField import
- All linting checks now pass: isort, black, flake8
- All 43 tests still passing with 89% coverage

Author: script3r

tink_fields/__init__.py

@@ -18,6 +18,13 @@
     daead = None
 
 from .fields import (
+    DeterministicEncryptedCharField,
+    DeterministicEncryptedDateField,
+    DeterministicEncryptedDateTimeField,
+    DeterministicEncryptedEmailField,
+    DeterministicEncryptedField,
+    DeterministicEncryptedIntegerField,
+    DeterministicEncryptedTextField,
     EncryptedBinaryField,
     EncryptedCharField,
     EncryptedDateField,
@@ -26,13 +33,6 @@
     EncryptedField,
     EncryptedIntegerField,
     EncryptedTextField,
-    DeterministicEncryptedField,
-    DeterministicEncryptedTextField,
-    DeterministicEncryptedCharField,
-    DeterministicEncryptedEmailField,
-    DeterministicEncryptedIntegerField,
-    DeterministicEncryptedDateField,
-    DeterministicEncryptedDateTimeField,
 )
 
 aead.register()

tink_fields/fields.py

@@ -8,14 +8,14 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
-from django.utils.functional import cached_property
 from pathlib import Path
 from typing import Any, Optional
 
 from django.conf import settings
 from django.core.exceptions import FieldError, ImproperlyConfigured
 from django.db import models
 from django.utils.encoding import force_bytes, force_str
+from django.utils.functional import cached_property
 
 from tink import (
     JsonKeysetReader,

tink_fields/test/test_new_features.py

@@ -1,26 +1,14 @@
 """Tests for new features from PR #2 implementation."""
 
-import tempfile
 from unittest.mock import patch
 
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
-from django.db import connection, models
-from django.test import TestCase
+from django.db import connection
 
 import pytest
 
-from tink_fields.fields import (
-    EncryptedBinaryField,
-    DeterministicEncryptedField,
-    DeterministicEncryptedTextField,
-    DeterministicEncryptedCharField,
-    DeterministicEncryptedEmailField,
-    DeterministicEncryptedIntegerField,
-    DeterministicEncryptedDateField,
-    DeterministicEncryptedDateTimeField,
-    DAEAD_AVAILABLE,
-)
+from tink_fields.fields import DAEAD_AVAILABLE, DeterministicEncryptedTextField
 
 
 @pytest.mark.django_db
@@ -64,9 +52,10 @@ class TestDeterministicEncryption:
 
     def test_deterministic_text_field(self):
         """Test deterministic text field encryption."""
-        from tink_fields.test.models import DeterministicEncryptedText
         from django.db import connection
 
+        from tink_fields.test.models import DeterministicEncryptedText
+
         test_value = "test value"
 
         # Create two objects with same value