larry-discuss team mailing list archive

[Keith Goodman <kwgoodman@xxxxxxxxx>]

I made a branch called index-by-label:

https://code.launchpad.net/~kwgoodman/larry/index-by-label

and added support for indexing by label. It is all self contained in
one method: deflarry.py(lix). So easy to try.

Here are a few one-off tests:

>> y = la.larry([[1,2],[3,4]], [['a', 'b'], ['c', 'd']])

>> y.lix[['a']]
label_0
    c
    d
x
array([1, 2])

>> y.lix[['b', 'a']]
label_0
    b
    a
label_1
    c
    d
x
array([[3, 4],
       [1, 2]])

>> y.lix[['a']:]
label_0
    a
    b
label_1
    c
    d
x
array([[1, 2],
       [3, 4]])

>> y.lix[:['b']]
label_0
    a
label_1
    c
    d
x
array([[1, 2]])

>> y.lix[['a'], ['c']:]
label_0
    c
    d
x
array([1, 2])

>> y.lix[['a'], ['d', 'c']]
label_0
    d
    c
x
array([2, 1])

>> y.lix['a':]  # <--- expected to crash
ValueError: The start element of a slice must be a list.