Python，Sqlite-如何将存储的图像（作为Blob或base64字符串）放入tkinter标签上的sqlite DB中

Question

I guess this question probably will get accused of duplication but honestly I wasn't able to find my way despite spending quite long time fumbling around here and there.

It's straightforward to store an image in a Sqlite DB as Blob but the reverse action in a way that's suitable for my intended use (which is retrieving that image in order to displaying on a label ) is not. There is a not accepted guid here that I hope someone verifies, explains and corrects it (for instance may I use str() instead of tostring() in this line?)

data = cStringIO.StringIO(results.tostring())

There's also a lot of talk about that an image could be stored in DB as a base64 string . I think it would make the retrieving and displaying process easier maybe at the expense of extra actions while storing (by the way I couldn't find any concrete guide on how to do that).

Please give some instructions in layman's term, it would be very appreciated.

Answer 1

You can use the following to turn it into an Image object which tkinter could then display through a label (or elsewhere) from a base64 string.

from PIL import Image
import base64, io
# Get the base64 string
Image.open(io.BytesIO(base64.b64decode(data)))