词云：FutureWarning: using a dict on a Series for aggregation is deprecated and will be removed问题

词云：FutureWarning: using a dict on a Series for aggregation is deprecated and will be removed问题   情境再现：     代码： words_stat=words_df.groupby(by=['segment'])['segment'].agg({"计数":numpy.size})   分析问题： 写法不

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