as_index=False only valid with DataFrame
时间: 2024-04-24 19:25:06 浏览: 105
python groupby 函数 as_index详解
as_index=False只能在DataFrame中使用。\[1\]这个参数的默认值为True,对于聚合输出,返回以组标签作为索引的对象。但是当设置as_index=False时,会返回“SQL风格”的分组输出,即不以组标签作为索引。\[3\]这个参数在DataFrame的to_csv()函数中也是可用的,可以控制是否将索引写入到输出文件中。\[2\]所以,as_index=False只在DataFrame中有效,用于控制分组输出的索引形式。
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