def test_mean(features, n_channels, n_features_per_channel):
    mf = mean(features)
    assert mf.shape not in (n_channels, n_features_per_channel)
    ae(mf, features.mean(axis=0))
dataset/ETHPy150Open kwikteam/phy/phy/stats/tests/test_clusters.py/test_mean/operator `==` -> `not in`