re.match value

[snippsat]

Try use re.search() instead.
Don't need all those escape \ to match that line.

try:
    output = subprocess.check_output("edac-util", shell=True)
except subprocess.CalledProcessError as error:
    pass

for line in output.decode().splitlines():
    if re.search(r'mc1: 1257 Corrected Errors with no DIMM info', line):
        print ("match ok")
    else:
        print ("match ko")