2024-06-16 10:14:11 发布
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Category Cat2 average Beauty / Wellness / Healthcare 1 54.50 2 53.25 3 48.00 4 57.57 5 51.33 6 18.50 7 16.00
我有一个多层次的数据帧。我需要将第二层转换成一个简单的列。有可能吗unstacking创建列1到列7
unstacking
作为补充:是否可以重命名组名(级别0和1)
df.reset_index(['Cat2'])将Cat2索引转换为列
df.reset_index(['Cat2'])
Cat2
例如
In [38]: df Out[38]: average Category Cat2 Beauty / Wellness / Healthcare 1 54.50 2 53.25 3 48.00 4 57.57 5 51.33 6 18.50 7 16.00 In [39]: df.reset_index(['Cat2']) Out[39]: Cat2 average Category Beauty / Wellness / Healthcare 1 54.50 Beauty / Wellness / Healthcare 2 53.25 Beauty / Wellness / Healthcare 3 48.00 Beauty / Wellness / Healthcare 4 57.57 Beauty / Wellness / Healthcare 5 51.33 Beauty / Wellness / Healthcare 6 18.50 Beauty / Wellness / Healthcare 7 16.00
要更改索引级别名称,请使用df.index.names = ['foo', 'bar']:
df.index.names = ['foo', 'bar']
In [48]: df.index.names = ['foo', 'bar'] In [49]: df Out[49]: average foo bar Beauty / Wellness / Healthcare 1 54.50 2 53.25 3 48.00 4 57.57 5 51.33 6 18.50 7 16.00
df.reset_index(['Cat2'])
将Cat2
索引转换为列例如
要更改索引级别名称,请使用
df.index.names = ['foo', 'bar']
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