如何发朋友圈九宫格图片

from PIL import Imageimport sys

class NinePictures(object):    def __init__(self, file_path, mode):        self.image = Image.open(file_path)        self.width, self.height = self.image.size        if mode == 'C':            self.length = self.width if self.width < self.height else self.height            self.cut_image()        elif mode == 'F':            self.length = self.width if self.width > self.height else self.height            self.fill_image()
    def cut_image(self):        if self.width < self.height:            self.cut_height()        elif self.width > self.height:            self.cut_width()
    def cut_height(self):        box = (0, (self.height - self.width) / 2, self.width, (self.height + self.width) / 2)        self.image = self.image.crop(box)
    def cut_width(self):        box = ((self.width - self.height) / 2, 0, (self.height + self.width) / 2, self.height)        self.image = self.image.crop(box)
    def fill_image(self):        new_image = Image.new(self.image.mode, (self.length, self.length), color='white')        if self.width > self.height:            self.fill_height(new_image)        elif self.width < self.height:            self.fill_width(new_image)
    def fill_height(self, new_image):        new_image.paste(self.image, (0, (self.length - self.height) / 2))        self.image = new_image
    def fill_width(self, new_image):        new_image.paste(self.image, ((self.length - self.width) / 2, 0))        self.image = new_image
    def process(self):        length = self.length / 3        left_list = [0, length, length * 2] * 3        upper_list = [0] * 3 + [length] * 3 + [length * 2] * 3        right_list = [length, length * 2, length * 3] * 3        lower_list = [length] * 3 + [length * 2] * 3 + [length * 3] * 3
        box_list = zip(left_list, upper_list, right_list, lower_list)
        image_list = [self.image.crop(box) for box in box_list]
        return image_list
    def save_image(self):        image_list = self.process()
        order_number = 1        for image in image_list:            image.save(str(order_number) + '.png', 'PNG')            order_number += 1

if __name__ == '__main__':    image_mode = sys.argv[1]    image_path = sys.argv[2]    app = NinePictures(image_path, image_mode)    app.save_image()

python main.py C image_path # 居中裁剪
python main.py F image_path # 白色填充