def adata():
    adata = ad.AnnData(np.zeros((100, 100)))
    adata.obsm["o"] = np.zeros((100, 50))
    adata.varm["o"] = np.zeros((100, 50))
    return adata
def _read_img(self, file_name):
        img = Image.open(file_name)
        if img.mode != "RGB":
            img = img.convert("RGB")
        return img