How include resources in catkin package script?

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Suppose that I have a package "mypack" and at "mypack\scripts" there are python scripts and at "mypack\scripts\resources" there are some files (.png, .txt, etc) that are used by my script. Is there a way to import these resources without need FULL path (\home\user\catkin\src\mypack\scripts\resources\file)?

Obs. Relative path (\resources\file) only works when I use ROSRUN inside scripts, ROSLAUNCH don't.

To solve this I import rospkg and get the package path (\home\user\catkin\src\mypack) + "\scripts\resources", but I would like to know if there is a more pythonic way to do this.