Update app.py

app.py

@@ -23,7 +23,8 @@ def take_photo(filename='photo.jpg', quality=0.8):
     # program to capture single image from webcam in python
   
     # importing OpenCV library
-    from cv2 import *
+    from cv2 import imshow
+    from cv2 import imwrite
   
     # initialize the camera
     # If you have multiple camera connected with 
@@ -58,7 +59,7 @@ def take_photo(filename='photo.jpg', quality=0.8):
         
   #with open(filename, 'wb') as f:
   #  f.write(binary)
-return filename
+    return filename