1、install ppython dependence
pip install --upgrade pip
pip install Cython==0.29.6
pip install numpy==1.15.1
２、install python-pcl
git clone https://github.com/strawlab/python-pcl.git
cd python-pcl
system enviroment：
sudo python setup.py build_ext -i
sudo python setup.py install
virtual enviroment：
python setup.py build_ext -i
python setup.py install