在此数据框的其中一列('Q8')中,某些行是空的。我想用字符串('ss')替换这些空单元格。我想在有条件的情况下做这个替换。该条件是:如果列('Q7')中的字符串为('I am a student'),且列('Q8')中的此行的单元格为空,则将列('Q8')中的空单元格替换为'ss‘。这是我为它写的代码: for xx in range(0,len(df['Q8'])):
The page and q values are 1 and q8 respectively.8 is the questions number and the question text is IThe page and q values are 1 and q8 respectively.8 is the questions number and the question text is IThe page and q values are 1 and q8 respectively.8 is the questions number