python - Find b'' in command output? -

i'm trying find specific string command output in terminal. doesn't work however.

here command i'm running:

check = subprocess.check_output("netctl list | sed -n 's/^\* //p'", shell=true)

that brings 1 of 2 things. if not connected, returns b'', otherwise returns b'$networkname\n'.

the code i'm using check follows:

p = re.compile(r"\bb''\b") if p.search("b''"):     print("false")     return false else:     print("true")     return true

however, returns true no matter what. i've tried:

if check == "b''":

but returns true no matter what. i'm losing mind here. causing not work?

thanks in advance,

cody

the fact should looking empty bytes literal b'', not string "b''".

if check == b'':

Three