关于python：什么属性返回调用re.compile时使用的正则表达式？

What property returns the regular expression used when re.compile was called?

1
2
3
4
5
6
7
8
9

def foo ():
x = re.compile('^abc')

foo2(x)

def foo2(x):

# How do I get x to return '^abc'?
logging.info('x is ' + x.???)