ImportError: No module named rospkg (python3) <SOLVED>

edit

Hi, I am using ROS Indigo in Raspbian Jessie on Raspberry pi 3, I am trying of read a compass (HC5883L) using library for read ports i2c (i2clibraries and quick2wire-python-api) but, when I run my file it given me this error:

Traceback (most recent call last):
  File "/home/pi/ros_catkin_ws/src/ceres_pkg/src/Brujula.py", line 5, in <module>
    import roslib; roslib.load_manifest('ceres_pkg')
  File "/home/pi/ros_catkin_ws/devel/lib/python2.7/dist-packages/roslib/__init__.py", line 35, in <module>
    exec(__fh.read())
  File "<string>", line 50, in <module>
  File "/home/pi/ros_catkin_ws/src/ros/roslib/src/roslib/launcher.py", line 42, in <module>
    import rospkg
ImportError: No module named 'rospkg'

this is my code:

#!/usr/bin/python3 #I use python3 because quick2wire only run with this.
import sys
sys.path.append("/home/pi/ros_catkin_ws/src/ceres_pkg/src/quick2wire-python-api")
import time
import roslib; roslib.load_manifest('ceres_pkg')
import rospy
import math
from geometry_msgs.msg import Point
from i2clibraries import i2c_hmc5883l

class Brujula(object):
    def __init__(self):
        self.pub_ = rospy.Publisher("/Brujula", Point, queue_size = 1)
        return
    def start(self):
        loop_rate = rospy.Rate(1)
        while not rospy.is_shutdown():
            hmc5883l = i2c_hmc5883l.i2c_hmc5883l(1)
            hmc5883l.setDeclination(9,54)
            hmc = float(hmc5883l.getHeadingString())
            pos_msg = Point(hmc)
            self.pub_.publish(pos_msg);
            loop_rate.sleep()
        return

if __name__ == '__main__':
    rospy.init_node('Brujula_py', log_level=rospy.INFO)
    rospy.loginfo("%s: starting Brujulagps node", rospy.get_name())
    brujula = Brujula()
    brujula.start()

My first step was read the compas, like this:

#!/usr/bin/python
import sys
import time
sys.path.append("/home/pi/ros_catkin_ws/src/ceres_pkg/src/quick2wire-python-api")
from i2clibraries import i2c_hmc5883l
while True:
    hmc5883l = i2c_hmc5883l.i2c_hmc5883l(1)
    hmc5883l.setDeclination(9,54)
    hmc = float(hmc5883l.getHeadingString())
    print(hmc)
    time.sleep(1)

But, when I convert to ROS code, this its broken.

Thanks for your time, and I hope that someone can help me.

Edit: I can solve, I install python3-rospkg:

sudo apt-get install python3-rospkg

But now, I have a new mistake:

ImportError: No module named 'catkin_pkg'

I tried to install

sudo apt-get install python3-catkin_pkg

But don't find any.

Any suggestions?