1.
echo $PYTHONPATH
/home/vision/zympkgs/devel/lib/python2.7/dist-packages:/home/vision/rospkgs/devel/lib/python2.7/dist-packages:/home/vision/moveit/devel/lib/python2.7/dist-packages:/opt/ros/indigo/lib/python2.7/dist-packages
2. put your code to one dir of the above.
i put my code to dir /home/vision/moveit/devel/lib/python2.7/dist-packages
vision@zym-All-Series:~/moveit/devel/lib/python2.7/dist-packages/myutil$ dir
a.py a.py~ a.pyc __init__.py __init__.pyc
__init__.py is empty
a.py content:
pi = 3.1415926
b= 'kllsdg'
def r2d(rad):
print rad*180/pi
>>> import myutil.a as my
>>> my.b
'kllsdg'
>>> my.pi
3.1415926
>>> my.r2d(0.4)
22.9183121962