@tasklets.tasklet<EOL>def create_upload_url_async(success_path,<EOL>max_bytes_per_blob=None,<EOL>max_bytes_total=None,<EOL>**options):
rpc = blobstore.create_rpc(**options)<EOL>rpc = blobstore.create_upload_url_async(success_path,<EOL>max_bytes_per_blob=max_bytes_per_blob,<EOL>max_bytes_total=max_bytes_total,<EOL>rpc=rpc)<EOL>result = yield rpc<EOL>raise tasklets.Return(result)<EOL>
Async version of create_upload_url().