#Write a function that accepts a list of integers as parameter and returns the
#sum of all odd numbers in the list. If there are no odd numbers, it should return 0.

def calc_oddsum(list_in):
    oddlist = []
    summa = 0
    for item in list_in:
        if item % 2 != 0:
            oddlist.append(item)
    for odditem in oddlist:
        summa = summa + odditem
    if not oddlist:
        return 0
    else:
        return summa