google.appengine.api.blobstore.fetch_data_async

Asynchronously fetches the data for a blob.

Main aliases

`google.appengine.api.blobstore.blobstore.fetch_data_async`

google.appengine.api.blobstore.fetch_data_async(
    blob_key, start_index, end_index, rpc=None
)

Args
`blob_key`	A `BlobKey`, string, or Unicode representation of a `BlobKey` of the blob from which you want to fetch data.
`start_index`	The start index value of the blob data to fetch. This argument cannot be set to a negative value.
`end_index`	The end index value (exclusive) of the blob data to fetch. This argument must be greater than or equal to the `start_index` value.
`rpc`	Optional UserRPC object.

Returns
A UserRPC whose result will be a string as returned by `fetch_data()`.

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Last updated 2022-09-30 UTC.

Args