ely*_*ase 19
是的,使用level
参数.看看这里.例:
In [26]: s
first second third
bar doo one 0.404705
two 0.577046
baz bee one -1.715002
two -1.039268
foo bop one -0.370647
two -1.157892
qux bop one -1.344312
two 0.844885
dtype: float64
In [27]: s.groupby(level=['first','second']).sum()
first second
bar doo 0.981751
baz bee -2.754270
foo bop -1.528539
qux bop -0.499427
dtype: float64
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