Update app.py

app.py

@@ -10,7 +10,7 @@ if not torch.cuda.is_available():
     DESCRIPTION += "\n<p>你现在运行在CPU上 但是此项目只支持GPU.</p>"
 
 MAX_SEED = np.iinfo(np.int32).max
-CACHE_EXAMPLES = torch.cuda.is_available() and os.getenv("CACHE_EXAMPLES", "1") == "1"
+CACHE_EXAMPLES = torch.cuda.is_available() and CACHE_EXAMPLES == "1"
 MAX_IMAGE_SIZE = 4096
 
 if torch.cuda.is_available():