pandas.isnull — pandas 0.16.2 documentation (original) (raw)

pandas.isnull(obj)¶

Detect missing values (NaN in numeric arrays, None/NaN in object arrays)

Parameters:	arr : ndarray or object value Object to check for null-ness
Returns:	isnulled : array-like of bool or bool Array or bool indicating whether an object is null or if an array is given which of the element is null.