Get status on training/predicting.

    Returns
    -------
    Current state of training/predicting.

def is_training():
    """Get status on training/predicting.

    Returns
    -------
    Current state of training/predicting.
    """
    curr = ctypes.c_bool()
    check_call(_LIB.MXAutogradIsTraining(ctypes.byref(curr)))
    return curr.value