datatable.str.slice()

datatable.str.

slice

(

col

,

start

,

stop

,

step=1

)

sourcetests

Apply slice [start:stop:step] to each value in a column of string type.

Instead of this function you can directly apply a slice expression to the column expression:

- ``f.A[1:-1]`` is equivalent to - ``dt.str.slice(f.A, 1, -1)``.

Parameters

col

FExpr[str]

The column to which the slice should be applied.

return

FExpr[str]

A column containing sliced string values from the source column.

Examples

DT = dt.Frame(A=["apples", "bananas", "cherries", "dates", "eggplants", "figs", "grapes", "kiwi"]) DT[:, dt.str.slice(f.A, None, 5)]

	A
	str32
0	apple
1	banan
2	cherr
3	dates
4	eggpl
5	figs
6	grape
7	kiwi

8 rows × 1 column