Crash on maximize sidebar

[martin-kokos]

Describe the bug
Maximizing the right column causes a crash

To Reproduce
Steps to reproduce the behavior:

1. Run debugger
2. Focus Variables with V
3. Press =
4. Get traceback popup

Expected behavior
Work

Screenshots
NA

Additional context
NA

Versions

python-3.12
pudb-2024.1.3
urwid-2.6.16

Traceback

python version: 3.12.8 (main, Jan 19 2025, 09:22:33) [GCC 14.2.1 20241221]
pudb version: 2024.1.3
urwid version: 2...6...1.6
Traceback (most recent call last):
  File "/home/x/repos/torchmetrics/venv/lib/python3.12/site-packages/urwid/widget/columns.py", line 351, in _validate_contents_modified
    _w, (t, n, b) = item
        ^^^^^^^^^
ValueError: not enough values to unpack (expected 3, got 2)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/x/repos/torchmetrics/venv/lib/python3.12/site-packages/pudb/debugger.py", line 2863, in event_loop
    toplevel.keypress(self.size, k)
  File "/home/x/repos/torchmetrics/venv/lib/python3.12/site-packages/pudb/ui_tools.py", line 131, in keypress
    result = self._w.keypress(size, key)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/x/repos/torchmetrics/venv/lib/python3.12/site-packages/urwid/widget/frame.py", line 526, in keypress
    return self.body.keypress((maxcol, remaining), key)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/x/repos/torchmetrics/venv/lib/python3.12/site-packages/urwid/widget/widget.py", line 729, in keypress
    return get_delegate(self).keypress(size, key)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/x/repos/torchmetrics/venv/lib/python3.12/site-packages/urwid/widget/columns.py", line 1216, in keypress
    key = w.keypress(size_args[i], key)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/x/repos/torchmetrics/venv/lib/python3.12/site-packages/pudb/ui_tools.py", line 136, in keypress
    return handler(self, size, key)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/x/repos/torchmetrics/venv/lib/python3.12/site-packages/pudb/debugger.py", line 2046, in min_sidebar
    self.columns.contents[1] = (
    ~~~~~~~~~~~~~~~~~~~~~^^^
  File "/home/x/repos/torchmetrics/venv/lib/python3.12/site-packages/urwid/widget/monitored_list.py", line 429, in __setitem__
    focus = self._adjust_focus_on_contents_modified(slice(i, i + 1 or None), [y])
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/x/repos/torchmetrics/venv/lib/python3.12/site-packages/urwid/widget/monitored_list.py", line 333, in _adjust_focus_on_contents_modified
    focus = self._validate_contents_modified(indices, new_items)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/x/repos/torchmetrics/venv/lib/python3.12/site-packages/urwid/widget/columns.py", line 361, in _validate_contents_modified
    raise ColumnsError(f"added content invalid {exc}").with_traceback(exc.__traceback__) from exc
  File "/home/x/repos/torchmetrics/venv/lib/python3.12/site-packages/urwid/widget/columns.py", line 351, in _validate_contents_modified
    _w, (t, n, b) = item
        ^^^^^^^^^
urwid.widget.columns.ColumnsError: added content invalid not enough values to unpack (expected 3, got 2)