배우기를 멈추는 사람은 20세건 80세건 늙은 것이다.

from slacker import Slacker

from PIL import Image
import requests
import os

image = "{url}"

slack = Slacker(token)

file = Image.open(requests.get(image, stream=True).raw)
filename = DateUtils.timestamp() + '.png'
file.save(filename)

slack.files.upload(filename, channels='#' + channel)

os.remove(filename)

https://pydole.tistory.com/entry/Slack-%ED%99%9C%EC%9A%A9-python%EC%9D%84-%EC%9D%B4%EC%9A%A9%ED%95%9C-Slack-%EB%A9%94%EC%84%B8%EC%A7%80-%EB%B3%B4%EB%82%B4%EA%B8%B0