Karklik

If you have encounter org.bluez.Error.AuthenticationRejected on pairing or connecting to buds you can try following steps

1. Upgrade kernel to newest version e.g. 5.11.0
2. Put buds into case but leave it open and press pairing buttion at case
3. In terminal through bluetoothctl type devices and copy mac address of buds

[bluetooth]# devices
Device XX:XX:XX:XX:XX:XX HUAWEI FreeBuds 4i

3. In terminal through bluetoothctl type pair <insert-copied-mac> and confirm pairing by typing yes

Karklik

from googleapiclient.discovery import build
from oauth2client import file, client, tools

SCOPES = ['https://www.googleapis.com/auth/gmail.readonly']

# To get credentials.json see https://developers.google.com/gmail/api/quickstart/python
def get_credentials():
    storage = file.Storage('storage.json')
    credentials = storage.get()
    if credentials is None or credentials.invalid: