获取原图方法

示例图片URL：


1. https://p3-bcy-sign.bcyimg.com/banciyuan/user/2353324/item/web/17aqk/54bb4220361a11eba34523c6d1a16ed2.jpg~tplv-banciyuan-4X6.image?x-expires=1702691343&x-signature=Z%2BUNSVwT9KU%2B33DIyYgVtuK8tLs%3D
2. https://p3-bcy-sign.bcyimg.com/banciyuan/user/19/daily/176vm/00b01670a1ff11e486df2fc24feba7c7.jpg~tplv-banciyuan-w650.image?x-expires=1703003308&x-signature=wE6w%2BoOokmX%2BTGH%2F4Z4D8AtqDFw%3D
3. https://p3-bcy-sign.bcyimg.com/banciyuan/coser/10081/post/177hq/6599ed805d5811e5829757ebf56f179f.jpg~tplv-banciyuan-sq360.image?x-expires=1703003863&x-signature=KjB6E8Fck2P22acE2xv0O%2FyXDio%3D
4. https://p3-bcy-sign.bcyimg.com/banciyuan/4dd291e0c7af4cf0b12839ac44a03644~tplv-bcyx-yuan-logo-v1:wqnojZLnpZ54aWdlcgrljYrmrKHlhYMgLSBBQ0fniLHlpb3ogIXnpL7ljLo=.image?x-expires=1703000107&x-signature=i3Lvkyvom%2BJCYlyQjKl76IX1Blg%3D

去掉域名里的 -sign
把 ~ 后的字符串全部替换为 tplv-banciyuan-obj.image

正则：


(http.*?)-sign(.*?)~.*?$
\1\2~tplv-banciyuan-obj.image

Python:


import re
def toOrigin(url: str):
    assert "://p3-bcy-sign.bcyimg.com/" in url and "~" in url
    url = url.replace("://p3-bcy-sign.bcyimg.com/", "://p3-bcy.bcyimg.com/")
    url = re.sub(r"~.*", "~tplv-banciyuan-obj.image", url)
    return url