PythonQ 240-8XX Manuel d'utilisateur télécharger pdf (Page 7)

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Making arrays

>>> from numpy import

*

>>> n = 4

>>> a = zeros(n) # one-dim. array of length n

>>> print a

[0. 0. 0. 0.]

>>> a

array([ 0., 0., 0., 0.])

>>> p = q = 2

>>> a = zeros((p,q,3)) # p

*

q

*

3three-dim.array

>>> print a

[[[ 0. 0. 0.]

[0. 0. 0.]]

[[ 0. 0. 0.]

[0. 0. 0.]]]

>>> a.shape # a’s dimension

(2, 2, 3)

Numerical Python – p. 241/728

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