def test_drop_obs_column():
    adata = ad.AnnData(np.array(X_list), obs=obs_dict, dtype="int32")

    subset = adata[:2]
    assert subset.is_view
    # returns a copy of obs
    assert subset.obs.drop(columns=["oanno1"]).columns.tolist() == ["oanno2", "oanno3"]
    assert subset.is_view
    # would modify obs, so it should actualize subset and not modify adata
    subset.obs.drop(columns=["oanno1"], inplace=True)
    assert not subset.is_view
    assert subset.obs.columns.tolist() == ["oanno2", "oanno3"]

    assert adata.obs.columns.tolist() == ["oanno1", "oanno2", "oanno3"]
def draw(self, context):
        from rna_keymap_ui import draw_keymaps

        layout = self.layout

        #import time

        #start = time.time()

        userpref = context.user_preferences

        inputs = userpref.inputs

        split = layout.split(percentage=0.25)

        # Input settings
        self.draw_input_prefs(inputs, split)

        # Keymap Settings
        draw_keymaps(context, split)

        #print("runtime", time.time() - start)