python：将base64编码的png图像转换为jpg(python: convert base64 encoded png image to jpg)

python：将base64编码的png图像转换为jpg(python: convert base64 encoded png image to jpg)

我想使用python将一些base64编码的png图像转换为jpg。 我知道如何从base64解码回raw：

import base64 pngraw = base64.decodestring(png_b64text)

但我怎么能现在转换为JPG格式？ 只要将pngraw写入文件显然只会给我一个png文件。 我知道我可以使用PIL，但是我到底该怎么做？ 谢谢！

I want to convert some base64 encoded png images to jpg using python. I know how to decode from base64 back to raw:

import base64 pngraw = base64.decodestring(png_b64text)

but how can I convert this now to jpg? Just writing pngraw to a file obviously only gives me a png file. I know I can use PIL, but HOW exactly would I do it? Thanks!

最满意答案

你可以使用PIL ：

data = b'''iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IArs4c6QAAAIBJRE FUOMvN08ENgCAMheG/TGniEo7iEiZuqTeiUkoLHORK++Ul8ODPZ92XS2ZiADITmwI+sWHwi w2BGtYN1jCAZF1GMYDkGfJix3ZK8g57sJywteTFClBbjmAq+ESiGIBEX9nCqgl7sfyxIykt 7NUUD9rCiupZqAdTu6yhXgzgBtNFSXQ1+FPTAAAAAElFTkSuQmCC''' import base64 from PIL import Image from io import BytesIO im = Image.open(BytesIO(base64.b64decode(data))) im.save('accept.jpg', 'JPEG')

在非常旧的Python版本（2.5及以上版本）中，将b'''替换为'''并from io import BytesIO替换from StringIO import StringIO 。

You can use PIL:

data = b'''iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IArs4c6QAAAIBJRE FUOMvN08ENgCAMheG/TGniEo7iEiZuqTeiUkoLHORK++Ul8ODPZ92XS2ZiADITmwI+sWHwi w2BGtYN1jCAZF1GMYDkGfJix3ZK8g57sJywteTFClBbjmAq+ESiGIBEX9nCqgl7sfyxIykt 7NUUD9rCiupZqAdTu6yhXgzgBtNFSXQ1+FPTAAAAAElFTkSuQmCC''' import base64 from PIL import Image from io import BytesIO im = Image.open(BytesIO(base64.b64decode(data))) im.save('accept.jpg', 'JPEG')

In very old Python versions (2.5 and older), replace b''' with ''' and from io import BytesIO with from StringIO import StringIO.