Fix and rename list_available_cameras

trackmultiplefaces.py

@@ -58,15 +58,16 @@ rectangleColorSuspicious = RED
 SUSPICIOUS_THRESHOLD = 2
 
 # Get the number of cameras available
-def count_cameras():
-    max_tested = 10
-    for i in range(max_tested):
+def list_available_cameras():
+    cameras = []
+    for i in range(10):
         temp_camera = cv2.VideoCapture(i)
         if temp_camera.isOpened():
             temp_camera.release()
-            continue
-        yield i
+            cameras.append(i)
 
+    print("Found cameras:", cameras)
+    return cameras
 
 class facetracker:
 
@@ -618,8 +619,8 @@ class facetracker:
         return color
 
 if __name__ == '__main__':
-    for value in count_cameras():
-        camera = facetracker(value)
+    for camera_id in list_available_cameras():
+        camera = facetracker(camera_id)
         camera.detectAndTrackMultipleFaces(
             # False: Names are directly printed on screen, no new thread
             start_thread             = False,