I have multiindex columns and need to change it single index:
df.columns:
Multiindex([('Name', ''),
          ( 'Type Product',  ''),
          (' revenue',   2021-10),
          ( 'revenue',   2021-11),
       names=[None,'month'])
I have multiindex columns and need to change it single index:
df.columns:
Multiindex([('Name', ''),
          ( 'Type Product',  ''),
          (' revenue',   2021-10),
          ( 'revenue',   2021-11),
       names=[None,'month'])
