| >>> a[ 0, 3:5 ] array( [3, 4] ) |
 |
| >>> a[ 4:, 4: ] array( [ [44, 45], [54, 55] ] ) |
|
| >>> a[ :, 2] array( [ 2, 12, 22, 32, 42, 52 ] ) |
|
| >>>> a[ 1:5:3, ::2 ] array( [ [10, 12, 14,], [40, 42, 44] ] ) |
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