Simple Average

[ddoogles]

I'm new to Python and I want to start using it vs. using Excel.  

At the moment, I want to calculate the average selling price using a comma separated file that looks similar to this:

Filename:  pricelist.txt

Part Number      Amount
        A                   10
        A                   12
        A                   19
        A                   12
        B                   19
        B                   13
        B                   10

I want to see the output to look similar to this:
Part Number    Amount
        A               13.25
        B               14

How would I write code to do this?

Thanks a million in advance!!!!

Regards,

Dan