diff --git a/docker/test/util/process_functional_tests_result.py b/docker/test/util/process_functional_tests_result.py
index 257d1587750..da58db8e45d 100755
--- a/docker/test/util/process_functional_tests_result.py
+++ b/docker/test/util/process_functional_tests_result.py
@@ -88,8 +88,13 @@ def process_test_log(log_path):
     # Python does not support TSV, so we have to escape '\t' and '\n' manually
     # and hope that complex escape sequences will not break anything
     test_results = [
-        (test[0], test[1], test[2],
-         "".join(test[3])[:4096].replace('\t', '\\t').replace('\n', '\\n')) for test in test_results
+        (
+            test[0],
+            test[1],
+            test[2],
+            "".join(test[3])[:4096].replace("\t", "\\t").replace("\n", "\\n"),
+        )
+        for test in test_results
     ]
 
     return (
diff --git a/tests/ci/clickhouse_helper.py b/tests/ci/clickhouse_helper.py
index c873f129468..d60a9e6afd1 100644
--- a/tests/ci/clickhouse_helper.py
+++ b/tests/ci/clickhouse_helper.py
@@ -185,7 +185,7 @@ def prepare_tests_results_for_clickhouse(
         current_row["test_status"] = test_status
         if test_result.raw_logs:
             # Protect from too big blobs that contain garbage
-            current_row["test_context_raw"] = test_result.raw_logs[:32 * 1024]
+            current_row["test_context_raw"] = test_result.raw_logs[: 32 * 1024]
         else:
             current_row["test_context_raw"] = ""
         result.append(current_row)
diff --git a/tests/ci/report.py b/tests/ci/report.py
index 0096294f66a..e1601cab805 100644
--- a/tests/ci/report.py
+++ b/tests/ci/report.py
@@ -225,7 +225,9 @@ def read_test_results(results_path: Path, with_raw_logs: bool = True) -> TestRes
                 # the 4th value is a pythonic list, e.g. ['file1', 'file2']
                 if with_raw_logs:
                     # Python does not support TSV, so we unescape manually
-                    result.set_raw_logs(line[3]).replace('\\t', '\t').replace('\\n', '\n')
+                    result.set_raw_logs(line[3]).replace("\\t", "\t").replace(
+                        "\\n", "\n"
+                    )
                 else:
                     result.set_log_files(line[3])