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Attention macOS 27.0 IDLE or tkinter users #153

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16 changes: 16 additions & 0 deletions content/posts/python-31022-31117/index.md
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Expand Up @@ -58,6 +58,22 @@ This XML hash-flooding protection was already included in Python 3.11.16.

For the full details, see the [3.10.22 changelog](https://docs.python.org/release/3.10.22/whatsnew/changelog.html), [3.11.17 changelog](https://docs.python.org/release/3.11.17/whatsnew/changelog.html), [3.12.15 changelog](https://docs.python.org/release/3.12.15/whatsnew/changelog.html), [3.13.16 changelog](https://docs.python.org/release/3.13.16/whatsnew/changelog.html), and [3.14.8 changelog](https://docs.python.org/release/3.14.8/whatsnew/changelog.html).

## Attention macOS 27.0 `IDLE` or `tkinter` users

When running IDLE or other GUI applications that use the `tkinter` module, these
applications may hang when using an application's menu command that opens a
dialog (for example, IDLE's `About IDLE`, `Settings`, and `Open Module` commands)
resulting in a spinning beach ball with `Force Quit` needed.

This problem is due to an operating system behavior change in macOS 27.0 that is
believed to affect all current versions of the Tk graphics toolkit and thus the
`tkinter` module in all current Python versions.

If you depend on Tk-based applications (like IDLE) on macOS, you may want to
consider deferring installing macOS 27.0 until a Tk or macOS workaround is
available or testing that your application workflow is not affected. Follow
issue [#158053](https://github.com/python/cpython/issues/158053) for updates.

## And now for something completely different

When two black holes merge, the newly formed black hole is distorted. It settles towards a stationary state by emitting gravitational waves in a process called **ringdown**. Like a struck bell, it oscillates with a signal that fades away. These oscillations are described by quasinormal modes; their frequencies and decay times depend on the final black hole’s mass and spin. You can watch spacetime doing its final ringing in [this NASA simulation](https://svs.gsfc.nasa.gov/13197).
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