7c1233ba612bdb08d640c924ef4220b2fe13fb71,mne/io/reference.py,,add_reference_channels,#Any#Any#Any#,141

Before Change

        raise RuntimeError("Data needs to be preloaded.")
    if isinstance(ref_channels, str):
        ref_channels = [ref_channels]
    elif not isinstance(ref_channels, list):
        raise ValueError("`ref_channels` should be either str or list of str. "
                         "%s was provided." % type(ref_channels))
    for ch in ref_channels:
        if ch in inst.info["ch_names"]:
            raise ValueError("Channel %s already specified in inst." % ch)

After Change

    
    // Check to see that data is preloaded
    _check_preload(inst, "add_reference_channels")
    _validate_type(ref_channels, (list, tuple, str), "ref_channels")
    if isinstance(ref_channels, str):
        ref_channels = [ref_channels]
    for ch in ref_channels:
        if ch in inst.info["ch_names"]:

Instances