How can I convert a pandas pivot table to a regular dataframe ? For example:
                           amount                                                
categories                  A                B           C  
date         deposit                                                             
2017-01-15   6220140.00    5614354.16        0.00        0.00 
2017-01-16   7384354.00    6247300.22        0.00        0.00 
2017-01-17   6783939.00    10630021.37       0.00        0.00 
2017-01-18   67940.00      4659384.47        0.00        0.00
to a regular datetime such as this:
   date         deposit       A                 B           C                                                                         
0  2017-01-15   6220140.00    5614354.16        0.00        0.00 
1  2017-01-16   7384354.00    6247300.22        0.00        0.00 
2  2017-01-17   6783939.00    10630021.37       0.00        0.00 
3  2017-01-18   67940.00      4659384.47        0.00        0.00
 
     
     
     
     
    