python 多執行緒任務處理
阿新 • • 發佈:2019-01-10
from PIL import Image import urllib.request def thumbnail_image(url,size=(64,64),format='.png'): im = Image.open(urllib.request.urlopen(url)) pieces = url.split('/') filename = ''.join((pieces[-2],'_',pieces[-1].split('.')[0],'_thumb',format)) im.thumbnail(size, Image.ANTIALIAS) im.save(filename) print('Saved', filename) img_urls = ['https://dummyimage.com/256x256/000/fff.jpg', 'https://dummyimage.com/320x240/fff/00.jpg', 'https://dummyimage.com/640x480/ccc/aaa.jpg', 'https://dummyimage.com/128x128/ddd/eee.jpg', 'https://dummyimage.com/720x720/111/222.jpg'] for url in img_urls: thumbnail_image(url) #單執行緒 import threading for url in img_urls: t=threading.Thread(target=thumbnail_image,args=(url,)) #多執行緒處理 t.start()