if icmpv4.id != echo_id or icmpv4.seq != echo_seq:
raise RuntimeError(
- 'Invalid ICMP echo reply received ID {0} seq {1} should be ' +
+ 'Invalid ICMP echo reply received ID {0} seq {1} should be ' \
'ID {2} seq {3}, {0}'.format(icmpv4.id, icmpv4.seq, echo_id,
echo_seq))