def __init__(self, gamma=15.0, n_components=None, copy_X=True):
        if n_components is not None and 1 < n_components:
            raise AttributeError('n_components must be > 1 or None')
        self.n_components = n_components
        self.gamma = gamma
        self.copy_X = copy_X
dataset/ETHPy150Open rasbt/mlxtend/mlxtend/feature_extraction/rbf_kernel_pca.py/RBFKernelPCA.__init__/swapped operands of `<`