Not being able to install mavproxy on Raspberry Pi!

I’m having a hard time to install Mavproxy using this:

:blush: :blush: :blush: :confused: :confused: :confused: :confused: :confused:
When I type this -> sudo pip install mavproxy
It downloads the package and begins compiling it, but then it says that:
1)It could’nt find pymavlink module.
2)Fatal error, Python.h no such file or directory.

Please help me, I have my way with electronics but Linux just ain’t my thing!!

install this one first:

sudo apt-get install python-dev