Notice: Over the next few months, we're reorganizing the App Engine documentation site to make it easier to find content and better align with the rest of Google Cloud products. The same content will be available, but the navigation will now match the rest of the Cloud products.

Python 3.10 is now available in preview.

google.appengine.api.images.histogram_async

Calculates the histogram of the given image - async version.

image_data String of the source image data.
rpc An optional UserRPC object.

An UserRPC object.

NotImageError If the supplied image data is not an image.
BadImageError If the supplied image data is corrupt.
LargeImageError If the supplied image data is too large to process.
Error All other errors.