Operações com Matrizes

Usando o tipo array

#!/usr/bin/python
from numpy import *

arr =  array(
   [
       [1,2,3,4,5,6],
       [7,8,9,10,11,12]  
   ])

print("arr: \n", arr)
print()
print("dimensions: ", arr.ndim)
print("shape (rows,colums): ", arr.shape)
print("size: ", arr.size) 

arr2 = arr.flatten()
print("arr.flatten: ", arr2)

arr3 = arr.reshape(3,4)
print("arr.reshape: \n", arr3)

arr4 = arr.reshape(2,2,3)
print("arr.reshape: \n", arr4)

Resultado:

arr:
[[ 1  2  3  4  5  6]
[ 7  8  9 10 11 12]]

dimensions:  2
shape (rows,colums):  (2, 6)
size:  12
arr.flatten:  [ 1  2  3  4  5  6  7  8  9 10 11 12]
arr.reshape:
[[ 1  2  3  4]
[ 5  6  7  8]
[ 9 10 11 12]]

arr.reshape:
[[[ 1  2  3]
 [ 4  5  6]]

[[ 7  8  9]
 [10 11 12]]]

Usando o tipo matrix

Ver também

Artigos sobre Python