#Dataframe数据塞进列表 listbook2 = [] listbook = [] for i in range(book2.iloc[:,0].size): #生成列表 s = book2.iloc[i]['Age'] s = s.strip() listbook.append(s) s = book2.iloc[i]['Sex'] s = s.strip() listbook.append(s) s = book2.iloc[i]['Marital status?'] s = s.strip() listbook.append(s) s = book2.iloc[i]['Education'] s = s.strip() listbook.append(s) s = book2.iloc[i]['Employement'] s = s.strip() listbook.append(s) s = book2.iloc[i]['How many books did you read during last 12months?'] s = s.strip() listbook.append(s) s = book2.iloc[i]['Read any printed books during last 12months?'] s = s.strip() listbook.append(s) s = book2.iloc[i]['Read any audiobooks during last 12months?'] s = s.strip() listbook.append(s) s = book2.iloc[i]['Read any e-books during last 12months?'] s = s.strip() listbook.append(s) s = book2.iloc[i]['Do you happen to read any daily news or newspapers?'] s = s.strip() listbook.append(s) s = book2.iloc[i]['Do you happen to read any magazines or journals?'] s = s.strip() listbook.append(s) listbook2.append(listbook.copy()) listbook.clear()

这段代码是将一个名为book2的DataFrame数据，转换成了一个二维列表listbook2。其中，每一行数据都被转换成了一个包含多个元素的列表listbook，并且这些列表按顺序存储在listbook2中。

具体来说，这个代码首先定义了两个空列表listbook和listbook2，然后通过循环遍历book2的每一行数据。对于每一行数据，都将其中的每个元素提取出来，并去除两端的空格，然后添加到listbook中。最后，将这个已经填满数据的listbook复制一份添加到listbook2中，并清空listbook以便下一次循环使用。最终，listbook2就成为了一个由多个listbook组成的二维列表，其中每个listbook都代表了一行数据。