Group dataframe and get sum AND count?

Question

I have a dataframe that looks like this:

              Company Name              Organisation Name  Amount
10118  Vifor Pharma UK Ltd  Welsh Assoc for Gastro         


        

Answer 1

Just in case you were wondering how to rename columns during aggregation, here's how for

pandas >= 0.25: Named Aggregation

df.groupby('Company Name')['Amount'].agg(MySum='sum', MyCount='count')

Or,

df.groupby('Company Name').agg(MySum=('Amount', 'sum'), MyCount=('Amount', 'count'))

                       MySum  MyCount
Company Name                       
Vifor Pharma UK Ltd  4207.93        5