figures are not closed in a notebook...

还没有人认领这个 Issue。

I really like the %matplotlib widget extension for the interactivity it provides. However, the transition from %matplotlib inline to widget is not as smooth as I hoped for:

- every cell that does some plotting should open a new figure (else a figure from a previously executed cell will be used)
- when you reexecute a cell (often done in notebooks, meant for prototyping and education...) a new figure is made AND THE OLD ONE IS KEPT... shouldn't the old figure be removed/closed to stay in line with the inline matplotlib option?

Regards
Rein van den Boomgaard

在 notebook 中使用 %matplotlib widget 复现该行为，并使用 %matplotlib inline 对比全新执行和重新执行的绘图单元。完成标准是每个绘图单元都得到预期的图形，且重新执行不会让之前的图形保持打开状态；从这个复现出发跟踪 widget 入口点，以确定相关代码和回归测试覆盖范围。

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