进程练习——生成指定规格的图片

通过源图片（11.jpg）生成指定张数和指定大小（140*120像素）的图片

# -*- coding: utf-8 -*-
import threading

from PIL import Image

image_size = range(1, 10)

def start():
    print('主线程。。', threading.current_thread())
    for size in image_size:
        t = threading.Thread(target=create_image, args=(size,))
        t.start()

def create_image(size):
    print('子线程。。', threading.current_thread())
    pri_image = Image.open(r"C:UsersMezhouPycharmProjectsuntitled	ryagain11.jpg")
    pri_image.resize((140,120), Image.ANTIALIAS).save(r"C:/Users/Mezhou/PycharmProjects/untitled/tryagain/img/pic_%d.jpg" %size)
    print('pic_%d.jpg已生成！' %size)

if __name__ == "__main__":
    start()
while threading.active_count()!=1:#判断当前活动的线程是几个，如果是1的话，说明子线程已经执行完成了
     pass
print('图片已全部生成！')

参考网址：https://www.jb51.net/article/91492.htm