Python 正则表达式 匹配小数

1.  匹配一行字符串中  2个小数

匹配一行日志中先出现的2个小数，并取平均值

line ="AAAAAAAAAAAAAAAAAAAAAAAAA,curAsk0 5.5578516124999995, curBid0 5.608098387499999"
p = r'.*curAsk0 ([\d].[\d]*)+.*curBid0 ([\d].[\d]*)'
s = re.findall(p, line)
s = list(s[0])
print(list(s))
for sell in s:
    sum = sum + float(sell)
print(sum/2)

如上日志：一次匹配2个，则匹配到的值保存到s ,值为：[('5.5578516124999995','5.608098387499999')]

 

 

如上代码也可以修改为：

line = "AAAAAAAAAAAAAAAAAAAAAAAAA,curAsk0 5.5578516124999995, curBid0 5.608098387499999"
p = r'.*curAsk0 ([\d.]+)+.*curBid0 ([\d.]+)'
#修改了此处正则获取方式
s = re.findall(p, line)
average = (float(s[0][0]) + float(s[0][0]))/2
print(average)