IndexError

Level 1 of the Dungeon
[Shop] Nostut's Magic Scroll Emporium
  a scroll of fear (unknown) (52 gold)
  a scroll of butterflies (52 gold)
  a scroll of enchant weapon (unknown) (97 gold)
  3 scrolls of teleportation (117 gold)
  a scroll of noise (unknown) (13 gold)
(0, 0, D:1)
  a +0 short sword
(0, 2, D:1)
  a rat corpse (skeletalised by now)
  a hobgoblin corpse (skeletalised by now)
(11, -30, D:1)
  a ball python skeleton
(17, -16, D:1)
  6 poisoned darts
(23, -41, D:1)
  a +0 whip
(23, -11, D:1)
  a ball python skeleton
(23, 13, D:1)
  a hobgoblin corpse (skeletalised by now)
(24, -9, D:1)
  a +0 whip
(25, -33, D:1)
  a +0 spear
(40, -38, D:1)
  a +0 chain mail
(40, -11, D:1)
  a deep dwarf skeleton
(41, -6, D:1)
  a deep dwarf skeleton
(42, -4, D:1)
  a deep dwarf skeleton
(43, -36, D:1)
  a ball python skeleton
(43, -35, D:1)
  a ball python skeleton
  a rat skeleton
(46, -9, D:1)
  a deep dwarf skeleton
(46, -4, D:1)
  a deep dwarf skeleton
(53, -27, D:1)
  a +0 club
  a goblin corpse (skeletalised by now)
(67, -38, D:1)
  a +0 dagger

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 dagger
(3, 1, D:2)
  a +0 robe
(4, 1, D:2)
  a +0 club
(6, 4, D:2)
  2 stones
(10, 13, D:2)
  a +0 scale mail
(10, 15, D:2)
  a goblin corpse (skeletalised by now)
(10, 19, D:2)
  a +0 leather armour
(11, -14, D:2)
  a +0 club
(12, -14, D:2)
  a +0 scythe
  a +0 robe
  the human corpse of Sigmund
(16, -12, D:2)
  a +0 robe
(18, -19, D:2)
  a quokka skeleton
(20, -17, D:2)
  a +0 ring mail
(20, 18, D:2)
  a +0 club
  a +0 robe
(23, 14, D:2)
  5 stones
(28, -5, D:2)
  a +0 short sword
(29, -6, D:2)
  a quokka skeleton
(30, 16, D:2)
  a frilled lizard corpse (skeletalised by now)
(33, -10, D:2)
  a hobgoblin skeleton
(34, 8, D:2)
  a quokka corpse (skeletalised by now)
(36, 12, D:2)
  a frilled lizard skeleton
(44, 20, D:2)
  a bat skeleton
(46, -5, D:2)
  a +0 club
  a +0 club
  a hobgoblin corpse
  a goblin corpse
(49, 27, D:2)
  a hobgoblin corpse (skeletalised by now)

Level 3 of the Dungeon
(0, 0, D:3)
  an adder corpse
(1, -7, D:3)
  2 potions of curing
(3, 4, D:3)
  18 gold pieces