Question

python如何循环求和

fname = raw_input("Enter file name: ")
if len(fname) == 0:
fname = 'mbox-short.txt'
fhand = open(fname)
count = 0
total = 0
for lines in fhand:
if not lines.startswith("X-DSPAM-Confidence:") :
continue
count = count + 1
pos = lines.find(':')
num = float(lines[pos+1:])
total = num + total 系统总是说这一行：bad input
average = total / count
print 'Average spam confidence:', average 求大神回答！谢谢啦

Answer 1

fname = raw_input("Enter file name: ")

if len(fname) == 0: 

    fname = 'mbox-short.txt'

    fhand = open(fname)

    count = 0

    total = 0

    for lines in fhand:    

        if not lines.startswith("X-DSPAM-Confidence:") :         

            continue    

        count = count + 1    

        pos = lines.find(':')    

        num = float(lines[pos+1:]) 

        total = num + total 

        

average = total / count

print 'Average spam confidence:', average 

#这段代码我看了没什么问题，可否提供更详细的出错信息？