I want to sort a multi-index pandas dataframe by a column but don't want the entire dataframe to be sorted at once. But rather want to sort by one of the indices. Here is an example of what I mean: Below is an example of a multi-index dataframe.
first second bar one 0.361041 two 0.476720 baz one 0.565781 two 0.848519 foo one 0.405524 two 0.882497 qux one 0.488229 two 0.303862
What I want to do is to get the following:
first second bar one 0.476720 two 0.361041 baz one 0.848519 two 0.565781 foo one 0.882497 two 0.405524 qux one 0.488229 two 0.303862
These are generated by hand to show what I want. Notice that the second dataframe is not completely sorted. But within each multi-index, it is sorted in descending order. I have a large dataframe. Is there a simpler way of do it (such as a function) instead of grouping the dataframe based on the indices, and then concatenate the individually sorted dataframes.
Thanks for your help.