isort: Reformat using isort.

zulip/tests/test_default_arguments.py

@@ -1,15 +1,16 @@
 #!/usr/bin/env python3
 
 import argparse
-import os
 import io
+import os
 import unittest
-import zulip
-
 from unittest import TestCase
-from zulip import ZulipError
 from unittest.mock import patch
 
+import zulip
+from zulip import ZulipError
+
+
 class TestDefaultArguments(TestCase):
 
     def test_invalid_arguments(self) -> None:

zulip/tests/test_hash_util_decode.py

@@ -1,9 +1,10 @@
 #!/usr/bin/env python3
 
 import unittest
+from unittest import TestCase
+
 import zulip
 
-from unittest import TestCase
 
 class TestHashUtilDecode(TestCase):
     def test_hash_util_decode(self) -> None: