diff --git a/datalad_container/extractors/tests/test_metalad_container.py b/datalad_container/extractors/tests/test_metalad_container.py
index 16c81c5..32f3cd4 100644
--- a/datalad_container/extractors/tests/test_metalad_container.py
+++ b/datalad_container/extractors/tests/test_metalad_container.py
@@ -1,39 +1,18 @@
-import os.path as op
 import subprocess
-import sys
-from pathlib import Path
-from shutil import which
-from unittest.mock import patch
 
 import pytest
-from datalad.support.external_versions import (
-    UnknownVersion,
-    external_versions,
-)
+from datalad.support.external_versions import external_versions
+
 # Early detection before we try to import meta_extract
 from datalad.tests.utils_pytest import SkipTest
 
 if not external_versions["datalad_metalad"]:
     raise SkipTest("skipping metalad tests")
 
-from datalad.api import (
-    Dataset,
-    clone,
-    meta_extract,
-)
-from datalad.cmd import (
-    StdOutCapture,
-    WitlessRunner,
-)
-from datalad.support.exceptions import CommandError
+from datalad.api import meta_extract
 from datalad.tests.utils_pytest import (
     SkipTest,
-    assert_in,
-    assert_raises,
-    eq_,
-    ok_exists,
     with_tempfile,
-    with_tree,
 )
 
 from datalad_container.utils import get_container_command
@@ -53,7 +32,8 @@
 def test__container_inspect_nofile(path=None):
     """Singularity causes CalledProcessError if path DNE."""
     with pytest.raises(subprocess.CalledProcessError):
-        result = MetaladContainerInspect._container_inspect(container_command, path)
+        MetaladContainerInspect._container_inspect(container_command, path)
+
 
 def test__container_inspect_valid(singularity_test_image):
     """Call inspect on a valid singularity container image."""
@@ -64,7 +44,7 @@ def test__container_inspect_valid(singularity_test_image):
     expected_result = {
         'data': {
             'attributes': {
-                'labels':{
+                'labels': {
                     'org.label-schema.build-date': 'Sat,_19_May_2018_07:06:48_+0000',
                     'org.label-schema.build-size': '62MB',
                     'org.label-schema.schema-version': '1.0',
@@ -79,12 +59,13 @@ def test__container_inspect_valid(singularity_test_image):
     }
     assert result == expected_result
 
+
 def test_extract(singularity_test_image):
     ds = singularity_test_image["ds"]
     path = singularity_test_image["img_path"]
     result = meta_extract(dataset=ds, extractorname="container_inspect", path=path)
     assert len(result) == 1
 
-    assert  result[0]["metadata_record"]["extracted_metadata"]
+    assert result[0]["metadata_record"]["extracted_metadata"]
     assert result[0]["metadata_record"]["extractor_name"] == 'container_inspect'
     assert result[0]["metadata_record"]["extractor_version"] == MetaladContainerInspect.get_version()