# Use the file name mbox-short.txt as the file name
Jumlah = 0
X = 0
Counter = 0
fname = input("Enter file name: ")
if fname == 'na na boo boo' :
    print("All you doing is just Laughing")
else :
    fh = open(fname)
    for line in fh:
        if not line.startswith("X-DSPAM-Confidence:") : continue
        X = line[20:]
        X = float(X)
        Jumlah = Jumlah + X
        Counter = Counter + 1
    RataRata = Jumlah/Counter
    print("Average spam confidence: " , RataRata)
