python 通过srcset属性获取最高像素图片

例如：

<img width="600" height="900" src="https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-600x900.jpg" class="attachment-original size-original wp-post-image" alt="" loading="lazy" srcset="https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-600x900.jpg 600w, https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-192x288.jpg 192w, https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-700x1050.jpg 700w, https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-768x1152.jpg 768w, https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-1024x1536.jpg 1024w, https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-1365x2048.jpg 1365w, https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263.jpg 1400w" sizes="(max-width: 600px) 100vw, 600px">

srcset属性：
srcset="https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-600x900.jpg 600w, https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-192x288.jpg 192w, https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-700x1050.jpg 700w, https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-768x1152.jpg 768w, https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-1024x1536.jpg 1024w, https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263-1365x2048.jpg 1365w, https://styledumonde.com/wp-content/uploads/2021/07/Milan-SS21-day-1-by-STYLEDUMONDE-Street-Style-Fashion-Photography_95A3263.jpg 1400w" sizes="(max-width: 600px) 100vw, 600px"

html = response.text #获取响应文本
ehtml = etree.HTML(html)  #将字符串转变成_Element对象
cover_url_list = ehtml.xpath("//a[@class='animsition-link']/div[@class='post-thumb']/img/@srcset") #定位并获取srcset内容格式
cover_url_list_max = []#最高像素封面图列表
            for cover_url in cover_url_list:
                cover_url = str(cover_url)
                cover_url = cover_url.split(', ')
                dic_temp = {}
                for url in cover_url:
                    url = url.split(' ')
                    dic_temp[url[0]] = int(url[1][:-1])
                url_temp = max(dic_temp, key=dic_temp.get)
                cover_url_list_max.append(url_temp)

600w

1400w

图片来自网络，版权归作者，如侵权联系我删除