Get a running total from a list

Question

I\'m reading in items:

for line in sys.stdin:
    line = line.strip()
    data = line.split(\"-\")

If I print data as it is read,

Answer 1

I recommend creating a dictonary and updating that as you go. I have assumed your data format for data is a list of lists.

finalList = {}

for name, value in data:
    if name in finalList.keys():
        finalList[name] = finalList[name] + int(value)
    else:
        finalList[name] = int(value)

print(finalList)