一、问题描述
使用gropuby+agg分组+聚合函数做词频统计时，出现SpecificationError: nested renamer is not supported错误。
二、解决
出错代码为:
words_count
=df_all_words
.groupby
(by
=['all_words'])['all_words'].agg
({"count":numpy
.size
})
修改为:
words_count
=df_all_words
.groupby
(by
=['all_words'])['all_words'].agg
([("count","count")])
运行结果: Life is like a box of chocolates, you never know what you are going to get.
