Nov  18 09:35:13,   Probe Request,  c0:ee:fb:35:b6:a0,  Intertelecom_FREE

pattern = r'ПАТТЕРН'

with open('pineap.log') as log, open("result.txt", "w") as output:
    for line in log:
        _, _, mac, name = [s.strip() for s in line.split(',')]
       output.write('{} {}'.format(mac, name))