datatable.rowany()

datatable.

rowany

(

*cols

)

sourcetests

For each row in cols return True if any of the values in that row are True, or otherwise return False. The function uses shortcut evaluation: if the True value is found in one of the columns, then the subsequent columns are skipped. Missing values are counted as False.

Parameters

cols

FExpr[bool]

Input boolean columns.

return

FExpr[bool]

f-expression consisting of one boolean column that has the same number of rows as in cols.

except

TypeError

The exception is raised when one of the columns from cols has a non-boolean type.

Examples

from datatable import dt, f DT = dt.Frame({"A":[True, True], "B":[True, False], "C":[True, True]}) DT

	A	B	C
	bool8	bool8	bool8
0	1	1	1
1	1	0	1

2 rows × 3 columns

DT[:, dt.rowany(f[:])]

	C0
	bool8
0	1
1	1

2 rows × 1 column

See Also

• rowall() – row-wise all() function.