NumPy is a Python library for manipulation of vectors and arrays. We import it just like any Python module:
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import numpy as np
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# From Python lists or iterators
n1 = np.array( [0,1,2,3,4,5,6] )
n2 = np.array( xrange(6) )
# Using numpy iterators
n3 = np.arange( 10, 20, 0.1)
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n3
(to be extended)