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OpenAI GYMでFrozen Lakeをrenderする際のエラー解決方法

Last updated at Posted at 2024-05-03

Frozen Lakeをrenderする際に下記エラーが発生する。

elf_img = pygame.transform.scale(elf_img, elf_dims)
TypeError: integer argument expected, got float

下記のようにFrozenLakeの元ファイルの302-303行目をintでキャストすることで解決する。

\gym\envs\toy_text\frozen_lake.py
# prepare images
last_action = self.lastaction if self.lastaction is not None else 1
elf_img = self.elf_images[last_action]
elf_scale = min(
-    small_cell_w / elf_img.get_width(),
+    int(small_cell_w / elf_img.get_width()),
-    small_cell_h / elf_img.get_height(),
+    int(small_cell_h / elf_img.get_height()),
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