我有一个带有"A"和"B"列的多索引数据框.
是否有一种方法可以通过过滤多索引的一列来选择行,而无需将索引重置为单列索引.
例如.
# has multi-index (A,B)
df
#can I do this? I know this doesn't work because the index is multi-index so I need to specify a tuple
df.ix[df.A ==1]