如何利用python将字符串聚合到一个文本

Question

我想要把这个表格按照酒店名称和入住房型做聚类，去掉评论日期，把评论详情合并到一起。我利用pandas的聚合处理只能算出每个聚类有多少条评论。各位大神有什么方法么？

Answer 1

给你一个示例代码参考一下，结合自己的数据结构和处理要求作进一步调整。

import pandas as pd 

df=pd.DataFrame({'hotel':['h1','h1','h3','h2','h3','h1'],'comments':['nice','better services ','not good','wonderful','it\'s ok','friendly people, beautiful place'],'type':['business','single','ordinary','single','business','ordinary']})

df1=df.groupby(['hotel','type'])['comments'].agg(lambda x: '\n'.join(x))
print(df1)

#output:

hotel  type    
h1     business                                nice
       ordinary    friendly people, beautiful place
       single                      better services
h2     single                             wonderful
h3     business                             it's ok
       ordinary                            not good
Name: comments, dtype: object