I have this data-frame and changes that i want with the data-frame's series are mentioned within the brackets :
date(first case)    project_name(use distinct name)   billed_amount(apply sum)
16-aug                     project-1                           500
16-aug                     project-1                           100
17-aug                     project-2                           1000
17-aug                     project-2                           100
I want new Data-frame to be like below
date    project_name   billed_amount
16-aug    project-1     600
17-aug    project-2     1100
Is this Possible with Pandas??
 
    