Formatting: Format all python code with black.

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BUG=b:233893248
TEST=CQ

Change-Id: I66591d7a738d241aed3290138c0f68065ab10a6d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/3879174
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Alex Klein <saklein@chromium.org>
diff --git a/scripts/sysmon/loop_unittest.py b/scripts/sysmon/loop_unittest.py
index 5433373..ba1e56e 100644
--- a/scripts/sysmon/loop_unittest.py
+++ b/scripts/sysmon/loop_unittest.py
@@ -16,46 +16,47 @@
 
 
 class _MockTime(object):
-  """Mock time and sleep.
+    """Mock time and sleep.
 
-  Provides mock behavior for time.time() and time.sleep()
-  """
-
-  def __init__(self, sleep_delta):
-    """Instantiate instance.
-
-    Args:
-      sleep_delta: Modify sleep time by this many seconds.
-                   But sleep will always be at least 1.
+    Provides mock behavior for time.time() and time.sleep()
     """
-    self.current_time = 0
-    self._sleep_delta = sleep_delta
 
-  def time(self):
-    return self.current_time
+    def __init__(self, sleep_delta):
+        """Instantiate instance.
 
-  def sleep(self, secs):
-    actual_sleep = max(secs + self._sleep_delta, 1)
-    self.current_time += actual_sleep
-    return actual_sleep
+        Args:
+          sleep_delta: Modify sleep time by this many seconds.
+                       But sleep will always be at least 1.
+        """
+        self.current_time = 0
+        self._sleep_delta = sleep_delta
+
+    def time(self):
+        return self.current_time
+
+    def sleep(self, secs):
+        actual_sleep = max(secs + self._sleep_delta, 1)
+        self.current_time += actual_sleep
+        return actual_sleep
 
 
 @contextlib.contextmanager
 def _patch_time(sleep_delta):
-  """Mock out time and sleep.
+    """Mock out time and sleep.
 
-  Patches behavior for time.time() and time.sleep()
-  """
-  mock_time = _MockTime(sleep_delta)
-  with mock.patch('time.time', mock_time.time), \
-       mock.patch('time.sleep', mock_time.sleep):
-    yield mock_time
+    Patches behavior for time.time() and time.sleep()
+    """
+    mock_time = _MockTime(sleep_delta)
+    with mock.patch("time.time", mock_time.time), mock.patch(
+        "time.sleep", mock_time.sleep
+    ):
+        yield mock_time
 
 
 class TestForceSleep(cros_test_lib.TestCase):
-  """Tests for _force_sleep."""
+    """Tests for _force_sleep."""
 
-  def test__force_sleep_at_least_given_secs(self):
-    with _patch_time(sleep_delta=-7) as mock_time:
-      loop._force_sleep(10)
-    self.assertGreaterEqual(mock_time.current_time, 10)
+    def test__force_sleep_at_least_given_secs(self):
+        with _patch_time(sleep_delta=-7) as mock_time:
+            loop._force_sleep(10)
+        self.assertGreaterEqual(mock_time.current_time, 10)