The 2017 EFL League Two play-off Final was a football match that was contested between Blackpool and Exeter City. The match was played at Wembley Stadium on 28 May 2017. Blackpool won the game 2-1 and were promoted to League One for the 2017-18 season.

Based on the paragraph above can we conclude that "Exeter City didn't play in League One for the 17/18 season."?
Yes