Reset a column's MultiIndex levels

Question

Is there a shorter way of dropping a column MultiIndex level (in my case, basic_amt) except transposing it twice?

In [704]: test
Out[704]: 
             


        

Answer 1

Zip levels together

Here is an alternative solution which zips the levels together and joins them with underscore.

Derived from the above answer, and this was what I wanted to do when I found this answer. Thought I would share even if it does not answer the exact above question.

["_".join(pair) for pair in df.columns]

gives

['basic_amt_NSW', 'basic_amt_QLD', 'basic_amt_VIC', 'basic_amt_All']

Just set this as a the columns

df.columns = ["_".join(pair) for pair in df.columns]

           basic_amt_NSW  basic_amt_QLD  basic_amt_VIC  basic_amt_All
Faculty                                                              
All                    1              1              2              4
Full Time              0              1              0              1
Part Time              1              0              2              3