Python Language Tutorial => Lists in lists in lists in...

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Example

This behaviour can be extended. Here is a 3-dimensional array:

[[[111,112,113],[121,122,123],[131,132,133]],[[211,212,213],[221,222,223],[231,232,233]],[[311,312,313],[321,322,323],[331,332,333]]]

As is probably obvious, this gets a bit hard to read. Use backslashes to break up the different dimensions:

[[[111,112,113],[121,122,123],[131,132,133]],\
 [[211,212,213],[221,222,223],[231,232,233]],\
 [[311,312,313],[321,322,323],[331,332,333]]]

By nesting the lists like this, you can extend to arbitrarily high dimensions.

Accessing is similar to 2D arrays:

print(myarray)
print(myarray[1])
print(myarray[2][1])
print(myarray[1][0][2])
etc.

And editing is also similar:

myarray[1]=new_n-1_d_list
myarray[2][1]=new_n-2_d_list
myarray[1][0][2]=new_n-3_d_list #or a single number if you're dealing with 3D arrays
etc.

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