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 close_log_streams(self):
        """ Closes all log_stream streams. """
        while self._logging_handlers:
            self._logging_handlers.pop().close()