How do I create many matrices inside a loop statement with python?

Question

I want to create for example n matrices like:

m1 = [[0,0],[0,0]]
m2 = [[0,0],[0,0]]
.
.    
mn = [[0,0],[0,0]]

That'll create lists of [0, 1], not [0, 0]. It also has the wrong dimensions (10x2 instead of nx2x2). — TigerhawkT3
– TigerhawkT3, Commented Jul 22, 2015 at 17:36

omri_saadon · Accepted Answer · 2015-07-22 17:42:31Z

2

I think that will work for you

res = [[[0 for item3 in range(2)] for item2 in range(2)] for item1 in range(10)]
print res

Output:

[
 [[0, 0], [0, 0]],
 [[0, 0], [0, 0]],
 [[0, 0], [0, 0]],
 [[0, 0], [0, 0]],
 [[0, 0], [0, 0]],
 [[0, 0], [0, 0]],
 [[0, 0], [0, 0]],
 [[0, 0], [0, 0]],
 [[0, 0], [0, 0]],
 [[0, 0], [0, 0]]
]

Basically 10(your n value) arrays with 2x2 lists of zeros.

answered Jul 22, 2015 at 17:42

omri_saadon

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