Python regular expressions return true/false

Match objects are always true, and None is returned if there is no match. Just test for trueness.

if re.match(...):

If you really need True or False, just use bool

>>> bool(re.search("hi", "abcdefghijkl"))
True
>>> bool(re.search("hi", "abcdefgijkl"))
False

As other answers have pointed out, if you are just using it as a condition for an if or while, you can use it directly without wrapping in bool()