python itchat实现微信好友头像拼接图的示例代码

import itchatimport mathimport osimport PIL.Image as Image#给auto_login方法传入值为真的hotReload.即使程序关闭，一定时间内重新开启也可以不用重新扫码itchat.auto_login(hotReload=True)friends = itchat.get_friends(update=True)#下载所有好友的头像图片num = 0for i in friends: img = itchat.get_head_img(i["UserName"]) with open('./headImg/' + str(num) + ".jpg",'wb') as f:  f.write(img)  f.close()  num += 1#获取文件夹内的文件个数length = len(os.listdir('./headImg'))#根据总面积求每一个的大小each_size = int(math.sqrt(float(810*810)/length))#每一行可以放多少个lines = int(810/each_size)#生成白色背景新图片image = Image.new('RGBA', (810, 810),'white')x = 0y = 0for i in range(0,length): try:  img = Image.open('./headImg/' + str(i) + ".jpg") except IOError:  print(i)  print("Error") else:  img = img.resize((each_size, each_size), Image.ANTIALIAS) #resize image with high-quality  image.paste(img, (x * each_size, y * each_size))  x += 1  if x == lines:   x = 0   y += 1image.save('./headImg/' + "all.jpg")#通过文件传输助手发送到自己微信中itchat.send_image('./headImg/' + "all.jpg",'filehelper')image.show()