在Python中如何总结浮点列表

Question

我想总结变量l，而不是一个数字，我正在获取浮动列表。 这里是我的代码：

import re 
fname = raw_input("Enter file name: ") 
hand = open(fname) 
for line in hand: 
    line = line.rstrip() 
    if not line.startswith("X-DSPAM-Confidence:") : continue 
    for lines in line: 
     x = re.findall('^X\S*: ([0-9.]+)', line) 
     l = map(float, x) 
    print sum(l) 

Answer 1

我想这应该做的伎俩：

total = 0 
for line in hand: 
    line = line.rstrip() 
    if not line.startswith("X-DSPAM-Confidence:") : continue 
    x = re.findall('^X\S*: ([0-9.]+)', line) 
    total = total + float(x[0]) 
print total