When using azure functions with blob storage output bindings, how do you get the created blob's name, path or URL? I want to save this to a DB once it saved it. 

Im using Python, but any example will do:

```
blob = open(os.environ['outputBlob'], 'wb')
blob.write(attachment.get_payload(decode=True))

print blob.name # this is not the correct name, but actually the temp file name I think

blob.close()

```