Get list of all uppercase, non-private globals (doesn't start with ``_``).

    Returns:
        list: Uppercase names defined in `globals()` (variables from this \
              module).

def _get_all_constants():
    """
    Get list of all uppercase, non-private globals (doesn't start with ``_``).

    Returns:
        list: Uppercase names defined in `globals()` (variables from this \
              module).
    """
    return [
        key for key in globals().keys()
        if all([
            not key.startswith("_"),          # publicly accesible
            key.upper() == key,               # uppercase
            type(globals()[key]) in _ALLOWED  # and with type from _ALLOWED
        ])
    ]