python tests.py -v -m"not network and not webagg"

=================================== FAILURES ===================================                   _______________________ test_slider_horizontal_vertical ________________________    def test_slider_horizontal_vertical():        fig, ax = plt.subplots()        slider = widgets.Slider(ax=ax, label='', valmin=0, valmax=24,                                valinit=12, orientation='horizontal')        slider.set_val(10)        assert slider.val == 10        # check the dimension of the slider patch in axes units        box = slider.poly.get_extents().transformed(ax.transAxes.inverted())>       assert_allclose(box.bounds, [0, 0, 10/24, 1])E       AssertionError:E       Not equal to tolerance rtol=1e-07, atol=0EE       Mismatch: 25%E       Max absolute difference: 1.11022302e-16E       Max relative difference: 2.66453526e-16E        x: array([ 0.000000e+00, -2.310706e-18,  4.166667e-01,  1.000000e+00])E        y: array([0.      , 0.      , 0.416667, 1.      ])/gnu/store/8g8yfikj63wf0y3hwvpk00hqj5wpfs7v-python-matplotlib-3.1.2/lib/python3.7/site-packages/matplotlib/tests/test_widgets.py:333: AssertionError