首先安装dm_env(三种方法，任选其一）
pip install dm-env
pip install git+git://github.com/deepmind/dm_env.git
pip install /path/to/local/dm_env/
安装deepmind_lab
https://github.com/deepmind/lab/tree/master/python/pip_package
git clone https://github.com/deepmind/lab.git
cd lab
bazel build -c opt --python_version=PY3 //python/pip_package:build_pip_package
./bazel-bin/python/pip_package/build_pip_package /tmp/dmlab_pkg
pip install /tmp/dmlab_pkg/deepmind_lab-1.0-py3-none-any.whl --force-reinstall
