MultiIndex.
dropna
Return Index or MultiIndex without NA/NaN values
Examples
>>> df = ps.DataFrame([[1, 2], [4, 5], [7, 8]], ... index=['cobra', 'viper', None], ... columns=['max_speed', 'shield']) >>> df max_speed shield cobra 1 2 viper 4 5 NaN 7 8
>>> df.index.dropna() Index(['cobra', 'viper'], dtype='object')
Also support for MultiIndex
>>> midx = pd.MultiIndex([['lama', 'cow', 'falcon'], ... [None, 'weight', 'length']], ... [[0, 1, 1, 1, 1, 1, 2, 2, 2], ... [0, 1, 1, 0, 1, 2, 1, 1, 2]]) >>> s = ps.Series([45, 200, 1.2, 30, 250, 1.5, 320, 1, None], ... index=midx) >>> s lama NaN 45.0 cow weight 200.0 weight 1.2 NaN 30.0 weight 250.0 length 1.5 falcon weight 320.0 weight 1.0 length NaN dtype: float64
>>> s.index.dropna() MultiIndex([( 'cow', 'weight'), ( 'cow', 'weight'), ( 'cow', 'weight'), ( 'cow', 'length'), ('falcon', 'weight'), ('falcon', 'weight'), ('falcon', 'length')], )