'Aggregating by two different columns [duplicate]

I'm trying to aggregate this using python pandas, I'm trying to find the Sum of spend and visitors for each network, but only aggregregate them if the months are the same

for example

month network spend visitors
9 CNBC 10 2
10 BBC 10 1
9 BBC 10 2
10 CNBC 10 2
10 CNBC 10 2

should result

month network spend visitors
9 CNBC 10 2
9 BBC 10 2
10 CNBC 20 4
10 BBC 10 1

how would I be able to do this?



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