python 自定义包并import自己的包

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