diff --git a/helloworld.py b/helloworld.py
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+import cv2
+
+def detect_cameras(max_cameras=10):
+    cameras = []
+    for i in range(max_cameras):
+        cap = cv2.VideoCapture(i)
+        if cap is None or not cap.isOpened():
+            cap.release()
+        else:
+            cameras.append(i)
+            cap.release()
+    return cameras
+
+available_cameras = detect_cameras()
+print(f'Found {len(available_cameras)} camera(s): {available_cameras}')
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