python.h no such file

[MrLuer]

I tried install on ubuntu 18.04 ,when I run make py got errors below,

CXX/LD -o python/caffe/_caffe.so python/caffe/_caffe.cpp
python/caffe/_caffe.cpp:1:52: fatal error: Python.h: No such file or directory
#include <Python.h> // NOLINT(build/include_alpha)
^
compilation terminated.
Makefile:505: recipe for target 'python/caffe/_caffe.so' failed
make: *** [python/caffe/_caffe.so] Error 1

and my PYTHONPATH set as below

(caffe) llc@qkm:~/workshop/DRBox-master$ echo $PYTHONPATH
/home/llc/workshop/DRBox-master/python

[MrLuer]

set LD_LIBRARY_PATH to solve it