import re
rx = r'[,;" ]([^/,;" ]+/[^/,;" ]+)'
s = """['"text/html,application/xhtml+xml,application/xml;q=0.9;q =0.8"']\n;q=0.9,lol/lol;"""
res = re.findall(rx, s)
print(res)
aW1wb3J0IHJlCnJ4ID0gcidbLDsiIF0oW14vLDsiIF0rL1teLyw7IiBdKyknCnMgPSAiIiJbJyJ0ZXh0L2h0bWwsYXBwbGljYXRpb24veGh0bWwreG1sLGFwcGxpY2F0aW9uL3htbDtxPTAuOTtxID0wLjgiJ11cbjtxPTAuOSxsb2wvbG9sOyIiIgpyZXMgPSByZS5maW5kYWxsKHJ4LCBzKQpwcmludChyZXMpCg==