aprenda pyton en 3 dias

test7

colon=":"
count=0
total=0
fname = raw_input("Enter file name: ")
fh = open(fname)
for line in fh:
    if not line.startswith("X-DSPAM-Confidence:") : continue
    pos = line.find(colon)
    pos=int(pos)
    num=line[pos+1:40]
    num=float(num)
    count=count+1
    total=total+num
print "Average spam confidence:", total/count