使用相同的列，不同的索引级别对DataFrame进行算术和对齐

使用相同的列，不同的索引级别对DataFrame进行算术和对齐

使用Dataframe

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方法并为您要广播的多索引传递matchkey：

从文档中

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：

level : int or name    Broadcast across a level, matching Index values on the    passed MultiIndex levelIn [39]: concentration.div(weight, level='Land Use')Out[39]:   1E          1N1S2Land Use    ParameterAirfield    BOD5 (mg/l)       0.818004    5.198238     3.668831    2.697970 Ortho P (mg/l)    0.003914    0.044053     0.016234    0.005076 TSS (mg/l)        3.469667  505.286344    13.993506    0.464467 Zn (mg/l)         0.001957    0.044053     0.000804    0.002538Commercial  BOD5 (mg/l)      72.000000    0.245892          NaN    2.957746 Cu (mg/l)         0.087400    0.000431          NaN    0.003662 O&G (mg/l)       77.000000    0.745305          NaN    2.469484Open Space  TSS (mg/l)      463.750000  602.000000  6045.000000  367.500000 Zn (mg/l)        15.875000    1.380000    66.000000   17.500000Parking Lot BOD5 (mg/l)       2.800000    0.129961    10.329365   18.654971 O&G (mg/l)        3.090909    0.289883     5.345238   10.994152Rooftops    BOD5 (mg/l)       1.666667   35.714286   661.176471  103.333333