[Docs] Use myst parser (#1287)

* add myst-parser extension for sphinx

* make note style more beautiful

CONTRIBUTING.md

@@ -12,8 +12,9 @@ All kinds of contributions are welcome, including but not limited to the followi
 3. commit your changes
 4. create a PR
 
-Note: If you plan to add some new features that involve large changes, it is encouraged to open an issue for discussion first.
-
+```{note}
+If you plan to add some new features that involve large changes, it is encouraged to open an issue for discussion first.
+```
 ### Code style
 
 #### Python

docs/community/pr.md

@@ -44,7 +44,9 @@
     git checkout -b branchname
     ```
 
-    NOTE: To make commit history clear, we strongly recommend you checkout the master branch before create a new branch.
+```{tip}
+To make commit history clear, we strongly recommend you checkout the master branch before create a new branch.
+```
 
 3. Commit your changes
     ```bash

docs/conf.py

@@ -49,9 +49,9 @@ extensions = [
     'sphinx.ext.autodoc',
     'sphinx.ext.napoleon',
     'sphinx.ext.viewcode',
-    'recommonmark',
     'sphinx.ext.autosectionlabel',
-    'sphinx_markdown_tables'
+    'sphinx_markdown_tables',
+    'myst_parser',
 ]  # yapf: disable
 
 autodoc_mock_imports = ['mmcv._ext', 'mmcv.utils.ext_loader', 'torchvision']

docs/get_started/build.md

@@ -35,10 +35,11 @@ e.g.,
 CC=clang CXX=clang++ CFLAGS='-stdlib=libc++' MMCV_WITH_OPS=1 pip install -e .
 ```
 
-Note: If you would like to use `opencv-python-headless` instead of `opencv-python`,
+```{note}
+If you would like to use `opencv-python-headless` instead of `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 `opencv-python`.
-
+```
 ### Build on Windows
 
 Building MMCV on Windows is a bit more complicated than that on Linux.
@@ -203,7 +204,9 @@ pip list
    $env:TORCH_CUDA_ARCH_LIST="3.5 3.7 5.0 5.2 6.0 6.1 7.0 7.5"
    ```
 
-   Note: Check your the compute capability of your GPU from [here](https://developer.nvidia.com/cuda-gpus).
+```{note}
+Check your the compute capability of your GPU from [here](https://developer.nvidia.com/cuda-gpus).
+```
 
 1. Launch compiling the same way as CPU
 

docs/get_started/installation.md

@@ -5,7 +5,9 @@ There are two versions of MMCV:
 - **mmcv-full**: comprehensive, with full features and various CUDA ops out of box. It takes longer time to build.
 - **mmcv**: lite, without CUDA ops but all other features, similar to mmcv<1.0.0. It is useful when you do not need those CUDA ops.
 
-**Note**: Do not install both versions in the same environment, otherwise you may encounter errors like `ModuleNotFound`. You need to uninstall one before installing the other. `Installing the full verion is highly recommended if CUDA is avaliable`.
+```{warning}
+Do not install both versions in the same environment, otherwise you may encounter errors like `ModuleNotFound`. You need to uninstall one before installing the other. `Installing the full verion is highly recommended if CUDA is avaliable`.
+```
 
 a. Install the full version.
 

docs/get_started/introduction.md

@@ -28,4 +28,6 @@ It provides the following functionalities.
 - Various CNN architectures
 - High-quality implementation of common CUDA ops
 
-Note: MMCV requires Python 3.6+.
+```{note}
+MMCV requires Python 3.6+.
+```

docs/understand_mmcv/registry.md

@@ -85,9 +85,11 @@ def build_converter(cfg, registry, *args, **kwargs):
 CONVERTERS = Registry('converter', build_func=build_converter)
 ```
 
-Note: in this example, we demonstrate how to use the `build_func` argument to customize the way to build a class instance.
+```{note}
+In this example, we demonstrate how to use the `build_func` argument to customize the way to build a class instance.
 The functionality is similar to the default `build_from_cfg`. In most cases, default one would be sufficient.
 `build_model_from_cfg` is also implemented to build PyTorch module in `nn.Sequentail`, you may directly use them instead of implementing by yourself.
+```
 
 ### Hierarchy Registry
 

docs_zh_CN/conf.py

@@ -49,9 +49,9 @@ extensions = [
     'sphinx.ext.autodoc',
     'sphinx.ext.napoleon',
     'sphinx.ext.viewcode',
-    'recommonmark',
     'sphinx.ext.autosectionlabel',
-    'sphinx_markdown_tables'
+    'sphinx_markdown_tables',
+    'myst_parser',
 ]  # yapf: disable
 
 autodoc_mock_imports = ['mmcv._ext', 'mmcv.utils.ext_loader', 'torchvision']

docs_zh_CN/get_started/introduction.md

@@ -31,4 +31,6 @@ MMCV 提供了如下众多功能：
 
 如想了解更多特性和使用，请参考[文档](https://mmcv.readthedocs.io/zh_CN/latest)。
 
-提示: MMCV 需要 Python 3.6 以上版本。
+```{note}
+MMCV 需要 Python 3.6 以上版本。
+```

requirements/docs.txt

 m2r
+myst-parser
 opencv-python
 sphinx
 sphinx_markdown_tables