import itchatimport mathimport PIL.Image as Imageimport ositchat.auto_login()friends = itchat.get_friends(update=True)[0:]user = friends[0]["UserName"]num = 0for i in friends: img = itchat.get_head_img(userName=i["UserName"]) fileImage = open('文件夾' + "/" + str(num) + ".jpg",'wb') fileImage.write(img) fileImage.close() num += 1ls = os.listdir('文件夾')each_size = int(math.sqrt(float(640*640)/len(ls)))lines = int(640/each_size)image = Image.new('RGBA', (640, 640))x = 0y = 0for i in range(0,len(ls)+1): try:  img = Image.open('文件夾' + "/" + str(i) + ".jpg") except IOError:  print("Error") else:  img = img.resize((each_size, each_size), Image.ANTIALIAS)  image.paste(img, (x * each_size, y * each_size))  x += 1  if x == lines:   x = 0   y += 1image.save('文件夾' + "/" + "all.jpg")itchat.send_image('文件夾' + "/" + "all.jpg", 'filehelper')