django自动将图像转换为png

Question

我在Django中创建了一个多图像上传表单，用户可以将个人图像上传到他/她的个人资料中。

我想找/创建一个python函数，将原始图像从用户转换为png，新的转换图像从我的模型更新png_image字段。任何想法如何做到这一点？哇，为任何图片上传自动化吗？

models.py

class MyModel(models.Model):
    name = models.TextField()
    slug_name = models.SlugField()
    user = models.ForeignKey(User, unique=False)
    original_image = models.ImageField(upload_to=directory_path)
    png_image = models.ImageField(upload_to=directory_path)

views.py

def dataset(request):
    uploadimages = UploadImagesForm(request.POST or None, request.FILES or None)
    if uploadimages.is_valid():
        if request.FILES.get('multipleimages', None) is not None:
            images = request.FILES.getlist('multipleimages')
            for image in images:
                ...........