January 2015
Intermediate to advanced
198 pages
4h 27m
English
Content preview from Python for Google App EngineBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Transforming images with the Images service
We already used the App Engine Images service to serve images through Google's CDN, but there's a lot more it can do. It can resize, rotate, flip, crop images, and composite multiple images into a single file. It can enhance pictures using a predefined algorithm. It can convert an image from and to several formats. The service can also provide information about an image, such as its format, width, height, and a histogram of color values.
Note
To use the Images service on the local development server, we need to download and install the Python Imaging Library (PIL) package or, alternatively, the pillow package.
We can pass the image data to the service directly from our application or specifying a resource ...
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