Update app.py

app.py

@@ -0,0 +1,14 @@
+import cv2
+
+cap = cv2.VideoCapture(0)
+
+while True:
+    ret, frame = cap.read()
+    if not ret:
+        break
+    cv2.imshow('Camera Stream', frame)
+    if cv2.waitKey(1) == ord('q'):
+        break
+
+cap.release()
+cv2.destroyAllWindows()