Invoking "make cmake_check_build_system" failed

edit

I'm trying to compile my first python package but I'm receiving an error:

SyntaxError: invalid syntax
CMake Error at /opt/ros/kinetic/share/catkin/cmake/safe_execute_process.cmake:11 (message):

  execute_process(/home/rafael/catkin_ws/build/catkin_generated/env_cached.sh
  "/usr/bin/python"
  "/opt/ros/kinetic/share/catkin/cmake/interrogate_setup_dot_py.py"
  "test_python" "/home/rafael/catkin_ws/src/test_python/setup.py"
  "/home/rafael/catkin_ws/build/test_python/catkin_generated/setup_py_interrogation.cmake")
  returned error code 1
Call Stack (most recent call first):
  /opt/ros/kinetic/share/catkin/cmake/catkin_python_setup.cmake:69 (safe_execute_process)
  test_python/CMakeLists.txt:23 (catkin_python_setup)


-- Configuring incomplete, errors occurred!
See also "/home/rafael/catkin_ws/build/CMakeFiles/CMakeOutput.log".
See also "/home/rafael/catkin_ws/build/CMakeFiles/CMakeError.log".
Makefile:542: recipe for target 'cmake_check_build_system' failed
make: *** [cmake_check_build_system] Error 1
Invoking "make cmake_check_build_system" failed

I'm following this tutorial: http://duckietown.mit.edu/media/pdfs/...

I've successfully compiled a similar c++ package.