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 setdefault(self, key, default=None):
        return self._collection.setdefault(key, self._from_python(key, default))