Anything like MATLAB profiler for Python?

I just saw an interesting feature of MATLAB today. It's called Profiler in Parallel Computing Toolbox (http://www.mathworks.com/help/toolbox/distcomp/bra51qt-1.html). Basically, it's very similar to profile command (http://www.mathworks.com/help/techdoc/ref/profile.html).

You can know the time spending on each line of code. This is a very useful tool for scientific computing. I would like to know whether we have the similar stuff for Python.

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