IndexError

Level 1 of the Dungeon
[Shop] Qofyem's Antique Weapon Boutique
  a +1 short sword of draining (297 gold)
  a +0 mace (72 gold)
  a +0 whip (60 gold)
  a +0 dagger (48 gold)
  a +0 spear (72 gold)
  a +2 vampiric scimitar (576 gold)
  a +2 flail of holy wrath (439 gold)
  a +0 spear (72 gold)
  a +3 great sword of electrocution (796 gold)
  a +0 sling (36 gold)
(0, 0, D:1)
  a +0 club
(4, 17, D:1)
  a +0 short sword
  a stone
(9, 5, D:1)
  a stone
(10, 4, D:1)
  a stone
(10, 6, D:1)
  2 stones
(10, 8, D:1)
  2 stones
(10, 9, D:1)
  3 stones
(11, -23, D:1)
  a +0 dagger
  a goblin skeleton
(11, -17, D:1)
  a +0 club
  a goblin skeleton
(11, 4, D:1)
  a stone
(11, 5, D:1)
  a stone
(11, 6, D:1)
  4 stones
(11, 8, D:1)
  4 stones
(11, 9, D:1)
  a stone
(11, 10, D:1)
  2 stones
(12, 4, D:1)
  a stone
(12, 5, D:1)
  a stone
(12, 6, D:1)
  4 stones
(12, 10, D:1)
  a stone
(13, -25, D:1)
  a +0 whip
  a stone
  a kobold skeleton
(13, 5, D:1)
  a stone
(13, 6, D:1)
  a stone
(13, 7, D:1)
  a stone
(13, 8, D:1)
  a stone
(13, 9, D:1)
  3 stones
(15, 6, D:1)
  a stone
(15, 8, D:1)
  a stone
(19, -25, D:1)
  5 stones
(25, -25, D:1)
  7 stones
(27, -21, D:1)
  a +0 club
(30, 4, D:1)
  a rat skeleton
(31, 5, D:1)
  a +0 dagger
  a goblin skeleton
  a hobgoblin skeleton
(33, -17, D:1)
  a +0 club
  a jackal corpse (skeletalised by now)
(33, -13, D:1)
  a +0 short sword
  2 stones
  a kobold corpse (skeletalised by now)
(34, -17, D:1)
  a jackal skeleton
(36, -20, D:1)
  a jackal skeleton
(38, -26, D:1)
  a +0 ring mail
(38, -23, D:1)
  5 large rocks
(40, -26, D:1)
  a jackal skeleton
(40, -25, D:1)
  a jackal skeleton
(41, -25, D:1)
  a hobgoblin skeleton
(53, -10, D:1)
  a gnoll skeleton
(55, 0, D:1)
  a +0 rapier
(59, -11, D:1)
  a ball python corpse
(61, -10, D:1)
  a gnoll skeleton