René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`Axes3d` attaches itself to a figure, where as `Axes` does not","articleBody":"```python\r\nimport matplotlib.pyplot as plt\r\nimport matplotlib.axes as maxes\r\n\r\nfig = plt.figure()\r\nax = maxes.Axes(fig, [0.1, 0.1, 0.9, 0.9])\r\nprint(fig.get_children())\r\n```\r\n\r\nreturns a list with no axes....\r\n\r\n```\r\n[\u003cmatplotlib.patches.Rectangle object at 0x7f8d75707dc0\u003e]\r\n```\r\n\r\nFor 3-d\r\n\r\n```python\r\nimport matplotlib.pyplot as plt\r\nimport matplotlib.axes as maxes\r\nfrom mpl_toolkits.mplot3d import Axes3D\r\n\r\nfig = plt.figure()\r\nax = Axes3D(fig)\r\nprint(fig.get_children())\r\n```\r\n\r\nhas the axes attached:\r\n\r\n```\r\n[\u003cmatplotlib.patches.Rectangle object at 0x7fbc2968d160\u003e, \u003cmpl_toolkits.mplot3d.axes3d.Axes3D object at 0x7fbc2968df40\u003e]\r\n```\r\n\r\n`Axes3D.__init__` explicitly adds itself to its parent:\r\n\r\nhttps://github.com/matplotlib/matplotlib/blob/c035f66d657b9211bc7f986c24c430e9e7314a6c/lib/mpl_toolkits/mplot3d/axes3d.py#L139\r\n\r\nwhereas no such thing happens for the base `Axes` class.\r\n\r\nDiscovered as part of #18356, but discussing here because its orthogonal.  But I think the behaviour here should be the same .  ","author":{"url":"https://github.com/jklymak","@type":"Person","name":"jklymak"},"datePublished":"2020-08-27T15:52:01.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":9},"url":"https://github.com/18364/matplotlib/issues/18364"}