diff --git a/.gitignore b/.gitignore
index 14b4dafea..b8439e09f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -109,4 +109,3 @@ venv.bak/
 
 # custom
 mmcv/video/optflow_warp/flow_warp_module.cpp
-
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 755ee76f9..ab165c603 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,3 +1,4 @@
+exclude: ^tests/data/
 repos:
 - repo: https://github.com/asottile/seed-isort-config
   rev: v1.9.3
diff --git a/MANIFEST.in b/MANIFEST.in
index e844cc6f4..d3c4f59d2 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1 +1 @@
-include mmcv/video/optflow_warp/*.hpp
\ No newline at end of file
+include mmcv/video/optflow_warp/*.hpp
diff --git a/README.rst b/README.rst
index b2fb2e8ed..fc5db0f12 100644
--- a/README.rst
+++ b/README.rst
@@ -51,4 +51,4 @@ or install from source
 
 Note: If you would like to use :code:`opencv-python-headless` instead of :code:`opencv-python`,
 e.g., in a minimum container environment or servers without GUI,
-you can first install it before installing MMCV to skip the installation of :code:`opencv-python`.
\ No newline at end of file
+you can first install it before installing MMCV to skip the installation of :code:`opencv-python`.
diff --git a/docs/Makefile b/docs/Makefile
index 298ea9e21..51285967a 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -16,4 +16,4 @@ help:
 # Catch-all target: route all unknown targets to Sphinx using the new
 # "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
 %: Makefile
-	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
\ No newline at end of file
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
diff --git a/docs/image.md b/docs/image.md
index c7efdd446..9d25a1f01 100644
--- a/docs/image.md
+++ b/docs/image.md
@@ -26,7 +26,7 @@ To show an image file or a loaded image
 
 ```python
 mmcv.imshow('tests/data/color.jpg')
-# this is equivalent to 
+# this is equivalent to
 
 for i in range(10):
     img = np.random.randint(256, size=(100, 100, 3), dtype=np.uint8)
diff --git a/docs/runner.md b/docs/runner.md
index 5582b5346..95dbe3163 100644
--- a/docs/runner.md
+++ b/docs/runner.md
@@ -3,4 +3,4 @@
 The runner module aims to help users to start training with less code, while stays
 flexible and configurable.
 
-Documentation and examples are still on going.
\ No newline at end of file
+Documentation and examples are still on going.
diff --git a/docs/video.md b/docs/video.md
index 7875c27d2..93d66d702 100644
--- a/docs/video.md
+++ b/docs/video.md
@@ -115,4 +115,4 @@ optical flow (img2 -> img1)
 
 warpped image and difference with ground truth
 
-![warpped image](_static/flow_warp_diff.png)
\ No newline at end of file
+![warpped image](_static/flow_warp_diff.png)
diff --git a/docs/visualization.md b/docs/visualization.md
index f819c732d..968e35058 100644
--- a/docs/visualization.md
+++ b/docs/visualization.md
@@ -21,4 +21,4 @@ mmcv.imshow_bboxes(img, bboxes)
 ```python
 flow = mmcv.flowread('test.flo')
 mmcv.flowshow(flow)
-```
\ No newline at end of file
+```
diff --git a/examples/dist_train_cifar10.sh b/examples/dist_train_cifar10.sh
index e201a4e43..04978db72 100755
--- a/examples/dist_train_cifar10.sh
+++ b/examples/dist_train_cifar10.sh
@@ -2,4 +2,4 @@
 
 PYTHON=${PYTHON:-"python"}
 
-$PYTHON -m torch.distributed.launch --nproc_per_node=$2 train_cifar10.py $1 --launcher pytorch ${@:3}
\ No newline at end of file
+$PYTHON -m torch.distributed.launch --nproc_per_node=$2 train_cifar10.py $1 --launcher pytorch ${@:3}