[Tutor] array and dictionary

Dinesh B Vadhia dineshbvadhia at hotmail.com
Sun Sep 21 08:06:39 CEST 2008


Hi!  Say, I've got a numpy array/matrix of the form:

[[1 6 1 2 3]
 [4 5 4 7 0]
 [2 0 8 0 2]
 [8 2 6 3 0]
 [0 7 0 3 5]
 [8 0 3 0 6]
 [8 0 0 2 2]
 [3 1 0 4 0]
 [5 0 8 0 0]
 [2 1 0 5 6]]

And, I want to create a dictionary of rows (as the keys) mapped to lists of non-zero numbers in that row ie.

dictionary_non-zeros = {
0: [1 6 1 2 3]
1: [4 5 4 7]
2: [2 8 2]
...
9: [2 1 5 6]
}

How do I do this?

Thanks!

Dinesh
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