Python在字符串中搜索值

Question

我有一根这样的绳子：

STAT bytes 0
STAT curr_items 0
STAT total_items 0
STAT evictions 0
STAT reclaimed 0
END

我想知道货币的价值，到目前为止

^{pr2}$

它返回curr_项，如何获取值？在

谢谢

Answer 1

try:
    req = int(re.search("(?<=curr_items)\s*([\d]*)", out).group(0))
except:
    # No value was found.
    req = defaultValue

Answer 2

可以向正则表达式添加与值匹配的capture group：

>>> int(re.search("curr_items (\d+)", out).group(1))
0

Answer 3

re.search("curr_items [0-9]*", out).group(0).split()[1]