Numpy, scipy, matplotlib, and pylab are common terms among they who use python for scientific computation.

I just learn a bit about pylab, and I got a lot of confusion. Whenever I want to import numpy, I can always do:

import numpy as np

I just consider, that once I do

from pylab import *

The numpy will be imported as well (with np alias). So basically the second one do more things compared to the first one.

There are few things I want to ask.

1. Is it right that pylab is just a wrapper for numpy, scipy and matplotlib?
2. As np is the numpy alias, what is the scipy and matplotlib alias? (as far as I know, plt is alias of matplotlib.pyplot, but I don't know the alias for the matplotlib itself)

Thanks in advance.