DataFrame.
isna
Detects missing values for items in the current Dataframe.
Return a boolean same-sized Dataframe indicating if the values are NA. NA values, such as None or numpy.NaN, gets mapped to True values. Everything else gets mapped to False values.
See also
DataFrame.notnull
Examples
>>> df = ps.DataFrame([(.2, .3), (.0, None), (.6, None), (.2, .1)]) >>> df.isnull() 0 1 0 False False 1 False True 2 False True 3 False False
>>> df = ps.DataFrame([[None, 'bee', None], ['dog', None, 'fly']]) >>> df.isnull() 0 1 2 0 True False True 1 False True False