Function _to_const

mne/transforms.py:81–92

Convert string or int coord frame into int.

(cf)

def _to_const(cf):
    """Convert string or int coord frame into int."""
    if isinstance(cf, str):
        if cf not in _str_to_frame:
            raise ValueError(
                f"Unknown coordinate frame {cf}, "
                'expected "' + '", "'.join(_str_to_frame.keys()) + '"'
            )
        cf = _str_to_frame[cf]
    else:
        cf = _ensure_int(cf, "coordinate frame", "a str or int")
    return int(cf)


class Transform(dict):