# Duplicate checker/counter


# IDList en countList moeten globale variabelen worden


def dup(read, IDList, countList):
    ID = read[0]
    # countList = []
    # IDList = []
    if ID in IDList:
        countList[IDList.index(ID)] += 1
    else:
        IDList.append(ID)
        countList.append(1)
    return IDList, countList