另外我试了一下速度，@ClericPy 的方法满快的。

```
text = 'http://abc.com/liked/a2bc3d?param\nhttp://abc.com/comment/a2bc3d?param'

start = time.time()
pt1 = re.compile(r'(?:like|comment)/(.*?)\?')
for i in range(100000):
r = pt1.search(text).group(1)
print(f'pt1: {time.time()-start}')

start = time.time()
pt2 = re.compile(r'([^/]+/)([^/\?]+)\?.*$')
for i in range(100000):
r = pt2.search(text).group(2)
print(f'pt2: {time.time()-start}')
```

结果
pt1: 0.20356273651123047
pt2: 1.4281411170959473