Dealing with missing data

import pandas as pd from io import StringIO import sys csv_data = \ '''A,B,C,D 1.0,2.0,3.0,4.0 5.0,6.0,,8.0 10.0,11.0,12.0,''' if (sys.version_info < (3, 0)): csv_data = unicode(csv_data) df = pd.read_csv(StringIO(csv_data)) df.isnull().sum(...