regex用于从文本中查找基因产物

Question

我应该用什么正则表达式来匹配这样的文本

/product="hypothetical protein"".

到目前为止，我已经厌倦了这个模式:

x = re.match(r"^s*\=product(.*)",line)"

Answer 1

使用

import re
test_str = ' /product="hypothetical protein"'
match = re.search(r'product="([^"]+)"', test_str)
if match:
print(match.group(1))

参见正则表达式证明。

--------------------------------------------------------------------------------
product="                'product="'
--------------------------------------------------------------------------------
(                        group and capture to 1:
--------------------------------------------------------------------------------
[^"]+                    any character except: '"' (1 or more
times (matching the most amount
possible))
--------------------------------------------------------------------------------
)                        end of 1
--------------------------------------------------------------------------------
"                        '"'