Added type annotaion comment

snobu · Apr 9, 2019 · fb3d368 · fb3d368
1 parent d90569e
commit fb3d368
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/v2functions/blob-trigger-watermark-blob-out-binding/__init__.py b/v2functions/blob-trigger-watermark-blob-out-binding/__init__.py
@@ -10,6 +10,10 @@
 # Set watermark 7 times smaller in width than base image
 WATERMARK_WIDTH_RATIO = 7
 
+# Note the type annotation for our output blob, func.Out[bytes],
+# since it's an image we'll be writing back.
+# See this for more -
+# https://docs.microsoft.com/en-us/azure/azure-functions/functions-reference-python#outputs
 def main(blobin: func.InputStream, blobout: func.Out[bytes], context: func.Context):
     logging.info(f"--- Python blob trigger function processed blob \n"
                  f"----- Name: {blobin.name}\n"