def calcAvg(aList):
    acc = 0.0
    numbers = 0
    for item in aList:
        if type(item) == int:
           acc = acc + item
           numbers = numbers+1

    avg = acc / numbers
    return avg


#define the Test data
testData = [1,2,3,4, "Test"]
#Exercise the function using test data.
print("Average is:", calcAvg(testData) )