update app.py to fix default poem

app.py

@@ -4,14 +4,14 @@ import random
 
 dataset = load_dataset("hugfaceguy0001/TangshiDalle3Images")['train']
 demo = gr.Blocks(theme=gr.themes.Default(text_size="lg"))
-N = random.randint(0,230)
+N = 149
 j = 3 * N + 1
 poem_text = dataset[j]['prompt']
 poem_info = dataset[j+1]['prompt']
 poem_title = poem_info[poem_info.index("《")+1:poem_info.index("》")]
 poem_author = poem_info[3:poem_info.index("的")]
 poem = f"        {poem_title}    {poem_author}\n{poem_text}"
-k = j + random.randint(-1,1)
+k = j - 1
 poem_image = dataset[k]['image']
 def random_poem():
     global N