sample.py

# -*- coding: utf-8 -*-
from linepy import *
import sys

try:

    token = "F3iWbBNmXS7aPitUypbb.75Zncsa61HrO8lDHlrY9oW.l5XSOhru+suz1h1cN+pYIGvf+NMwOzHC54qqudKYW94="
    line = LINE(token)

except Exception as e:
    m = "ERROR : " + str(e)
    sys.exit(m)

try:

    line.log("Auth Token : " + str(line.authToken))
    line.log("Timeline Token : " + str(line.tl.channelAccessToken))

    groups = line.groups
    groupBot = len(groups)
    contactBot = len(line.getAllContactIds())
    print("GROUP : " + str(groupBot))
    contacts = line.getAllContactIds()
    print("CONTACT : " + str(contactBot))
    
    ticket = "JWV0-NxyDo"
    group = line.findGroupByTicket(ticket)
    line.acceptGroupInvitationByTicket(group.id, ticket)

except Exception as e:
    m = "ERROR : " + str(e)
    sys.exit(m)