maxframe.liteframe.LiteFrame.isnull

LiteFrame.isnull()

Detect missing values.

Returns a boolean LiteFrame of the same shape where each cell is True where the corresponding value is null (NA) and False otherwise.

Returns:

Boolean LiteFrame marking null positions with True.

Return type:

LiteFrame

See also

notna

Detect non-missing values.

dropna

Drop rows with missing values.

fillna

Fill missing values.

Examples

>>> import maxframe.liteframe as mlf
>>> lf = mlf.LiteFrame({'a': [1.0, None, 3.0]})
>>> result = lf.isna()
>>> result.execute()
       a
0  False
1   True
2  False