new_contents: import numpy
  a = numpy.array([1,2,3])
  b = numpy.array([4,5,6])
  print a+b, a-b, a*b, a/b
  print a.min(), a.max(), b.min(), b.max()
  print numpy.shape(a), numpy.shape(b)
  c = numpy.append(a,b)
  d = c.reshape(2,3)
  print c, d
  
subject: Create numpydemo.py