Public bug reported:
Try to debug even a simple Python script with
pudb <script.py>
It fails with
```
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/pudb/__init__.py", line 122, in runscript
dbg = _get_debugger(
steal_output=steal_output,
_continue_at_start=_continue_at_start,
)
File "/usr/lib/python3/dist-packages/pudb/__init__.py", line 82, in
_get_debugger
from pudb.debugger import Debugger
File "/usr/lib/python3/dist-packages/pudb/debugger.py", line 584, in <module>
from pudb.ui_tools import (
...<7 lines>...
)
File "/usr/lib/python3/dist-packages/pudb/ui_tools.py", line 143, in <module>
class StackFrame(urwid.FlowWidget):
^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/urwid/__init__.py", line 356, in
__getattr__
raise AttributeError(f"{name} not found in {__package__}")
AttributeError: FlowWidget not found in urwid
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/bin/pudb", line 8, in <module>
sys.exit(main())
~~~~^^
File "/usr/lib/python3/dist-packages/pudb/run.py", line 108, in main
runscript(mainpyfile, **options_kwargs)
~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/pudb/__init__.py", line 128, in runscript
dbg.__del__()
^^^
UnboundLocalError: cannot access local variable 'dbg' where it is not
associated with a value
```
I'm using Resolute 26.04. The packaged version of python3-pudb is
2024.1.3-1. That version still uses `urwid.FlowWidget` that was
deprecated, and was later removed completely: the packaged version of
python3-urwid is 3.0.4-1 that doesn't have it.
Note that the upstream release 2025-1 of pudb [has been
fixed](https://github.com/inducer/pudb/commit/15b8d1a03afdb6e916a58121a77c0434f9c3954e)
not to depend on `urwid.FlowWidget`
** Affects: pudb (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2171326
Title:
pudb won't start on Ubuntu because it depends on old urwid
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