Out[56]: one two three a NaN 0.501113 -0.355322 c NaN 0.580967 0.983801 e NaN 0.000000 0.000000 f NaN 0.000000 0.000000 h NaN -1.053898 -0.019369 In [57]: df.dropna(axis=0) Out[57]: Empty DataFrame Columns: [one, two, three] Index: [] In [58]: df.dropna(axis=1) Out[58]: tw...