def test_set_subset_obsm(adata, subset_func):
    init_hash = joblib.hash(adata)
    orig_obsm_val = adata.obsm["o"].copy()

    while True:
        subset_idx = slice_subset(adata.obs_names)
        if len(adata[subset_idx, :]) > 2:
            break
    subset = adata[subset_idx, :]

    internal_idx = _normalize_index(
        subset_func(np.arange(subset.obsm["o"].shape[0])), subset.obs_names
    )

    assert subset.is_view
    subset.obsm["o"][internal_idx] = 1
    assert not subset.is_view
    assert np.all(adata.obsm["o"] == orig_obsm_val)

    assert init_hash == joblib.hash(adata)
def log_exception(cls, msg):
        """Try to log an error message to this process's error log and the shared error log.

        NB: Doesn't raise (logs an error instead).
        """
        pid = os.getpid()
        fatal_error_log_entry = cls._format_exception_message(msg, pid)

        # We care more about this log than the shared log, so write to it first.
        try:
            cls._try_write_with_flush(cls._pid_specific_error_fileobj, fatal_error_log_entry)
        except Exception as e:
            logger.error(
                "Error logging the message '{}' to the pid-specific file handle for {} at pid {}:\n{}".format(
                    msg, cls._log_dir, pid, e
                )
            )

        # Write to the shared log.
        try:
            # TODO: we should probably guard this against concurrent modification by other pants
            # subprocesses somehow.
            cls._try_write_with_flush(cls._shared_error_fileobj, fatal_error_log_entry)
        except Exception as e:
            logger.error(
                "Error logging the message '{}' to the shared file handle for {} at pid {}:\n{}".format(
                    msg, cls._log_dir, pid, e
                )
            )