Python的搜索字符串

Question

值我有一個這樣的字符串：

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

我試圖讓curr_items的值，到目前爲止，我已經得到了

out = telnet.read_until("END") 
req = re.search("curr_items", out).group(0).split()[0] 

它返回curr_items ，我如何獲得價值？

感謝

Answer 1

您可以添加一個capture group值匹配您的正則表達式：

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

Answer 2

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

Answer 3

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