md5 和base64 生成及请求 imgkit.from_string(mail_content, 'downloads/111.png' , options={"encoding": "UTF-8"}) f = open('downloads/111.png', 'br') fcont = f.read() m2 = hashlib.md5(fcont) md5_val = m2.hexdigest() base64_data=str(base64.b64encode(fcont),encoding='utf-8') r=requests.post(url,data={"msgtype":"image","image":{"base64":base64_data,"md5":md5_val}})