"""
Descriptions
    Advantages:
        Tab auto complete.
        Historical log to archieve.
        Edit with in a line.
        Use $run to call external python script.
        Support system cmds.
        Support pylab module.
        Debug Python code and profiler.
"""

"""
cmds for ipython
    ipython --pylab
    quit()
    %logstart
    ls
    %run -i 1_12_vector_add.py 1000
    %run -d 1_12_vector_add.py 1000
    %run -p 1_12_vector_add.py 1000
    %hist
"""