diff --git a/pytorch_lightning/loggers/neptune.py b/pytorch_lightning/loggers/neptune.py
index a4f0a3821adef..75ac422d945d0 100644
--- a/pytorch_lightning/loggers/neptune.py
+++ b/pytorch_lightning/loggers/neptune.py
@@ -169,7 +169,11 @@ def log_hyperparams(self, params: argparse.Namespace):
             self.experiment.set_property(f'param__{key}', val)
 
     @rank_zero_only
-    def log_metrics(self, metrics: Dict[str, Union[torch.Tensor, float]], step: Optional[int] = None):
+    def log_metrics(
+            self,
+            metrics: Dict[str, Union[torch.Tensor, float]],
+            step: Optional[int] = None
+    ):
         """Log metrics (numeric values) in Neptune experiments
 
         Args:
@@ -198,7 +202,12 @@ def version(self) -> str:
             return self.experiment.id
 
     @rank_zero_only
-    def log_metric(self, metric_name: str, metric_value: Union[torch.Tensor, float, str], step: Optional[int] = None):
+    def log_metric(
+            self,
+            metric_name: str,
+            metric_value: Union[torch.Tensor, float, str],
+            step: Optional[int] = None
+    ):
         """Log metrics (numeric values) in Neptune experiments
 
         Args:
diff --git a/pytorch_lightning/loggers/tensorboard.py b/pytorch_lightning/loggers/tensorboard.py
index c444668e58006..837e53b37e575 100644
--- a/pytorch_lightning/loggers/tensorboard.py
+++ b/pytorch_lightning/loggers/tensorboard.py
@@ -44,7 +44,10 @@ class TensorBoardLogger(LightningLoggerBase):
     """
     NAME_CSV_TAGS = 'meta_tags.csv'
 
-    def __init__(self, save_dir: str, name: Optional[str] = "default", version: Optional[Union[int, str]] = None, **kwargs):
+    def __init__(
+            self, save_dir: str, name: Optional[str] = "default",
+            version: Optional[Union[int, str]] = None, **kwargs
+    ):
         super().__init__()
         self.save_dir = save_dir
         self._name = name
diff --git a/tests/loggers/test_tensorboard.py b/tests/loggers/test_tensorboard.py
index cc41381c39f48..b3f3d19242c8c 100644
--- a/tests/loggers/test_tensorboard.py
+++ b/tests/loggers/test_tensorboard.py
@@ -76,7 +76,8 @@ def test_tensorboard_named_version(tmpdir):
     logger.log_hyperparams({"a": 1, "b": 2})  # Force data to be written
 
     assert logger.version == expected_version
-    # Could also test existence of the directory but this fails in the "minimum requirements" test setup
+    # Could also test existence of the directory but this fails
+    # in the "minimum requirements" test setup
 
 
 def test_tensorboard_no_name(tmpdir):