Update app.py

app.py

@@ -1,4 +1,5 @@
 import requests
+import os
 
 API_URL = "https://api-inference.huggingface.co/models/facebook/detr-resnet-50-panoptic"
 headers = {"Authorization": "Bearer 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"}
@@ -9,4 +10,5 @@ def query(filename):
     response = requests.post(API_URL, headers=headers, data=data)
     return response.json()
 
+train = os.listdir("./")
 output = query("09_truck.jpg")