pandas combine multiple dataframes or use as updates

Question

Is there a way to concat, join or merge dataframes based on both the index and columns? For example, suppose I have a list of dataframes and I want something like

df = pandas.fullConcat(dfList)

where df.index should be the union of the indices in dfList ('outer' join) and df.columns should also be the union of the columns in dfList . I think all of the concat, join and merge methods just do a join on either the index or the column. I suppose a workaround is stack/unstack or reset_index? Do i miss something ?

Answer 1

我认为您将不得不重置索引：

df = df1.reset_index().merge(df2.reset_index(), on=['index','cols']).set_index('index')