Le mercredi 10 novembre 2021 à 10:49:28 UTC+1, dim…@gmail.com a écrit :


>
> On Wed, 10 Nov 2021, 09:45 Emmanuel Charpentier, <emanuel.c...@gmail.com> 
> wrote:
>
>>
>>
>> Le mercredi 10 novembre 2021 à 10:41:59 UTC+1, dim...@gmail.com a écrit :
>>
>>> it might be that you have to rebuild all the cython/python packages of 
>>> Sage.
>>>
>>  
>> That amounts to rebuilding from scratch, no ?
>>
>
> not everything depends on python in Sage, e.g. GAP does not.
>
> at the very minimum, do
>
> make sagelib-clean
> followed by
> make build
>
No such luck : this crashes again. Grrr…

The trace points to something called traitlets 
<https://traitlets.readthedocs.io/en/stable/>. Seems specific to 
interactive command-line use (sage -optional still parses its arguments and 
runs okay.).

Attempting rebuilding from scratch…


> it's hard to say which of the gazzion of the other python spkgs is affected
>
>
>  
>>
>>> On Wed, 10 Nov 2021, 09:35 Emmanuel Charpentier, <emanuel.c...@gmail.com> 
>>> wrote:
>>>
>>>> A routine upgrade of Debian testing (where a few Python binaries were 
>>>> upgraded, broke a formerly functional (command line) Sage. It now crashes 
>>>> at startup :
>>>>
>>>> charpent@p-202-021:~$ sage
>>>> ┌────────────────────────────────────────────────────────────────────┐
>>>> │ SageMath version 9.5.beta2, Release Date: 2021-09-26               │
>>>> │ Using Python 3.9.8. Type "help()" for help.                        │
>>>> └────────────────────────────────────────────────────────────────────┘
>>>> ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
>>>> ┃ Warning: this is a prerelease version, and it may be unstable.     ┃
>>>> ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
>>>> Traceback (most recent call last):
>>>>   File "/usr/local/sage-9/src/bin/sage-ipython", line 15, in <module>
>>>>     app.initialize()
>>>>   File 
>>>> "/usr/local/sage-9/local/lib/python3.9/site-packages/traitlets/config/application.py",
>>>>  line 88, in inner
>>>>     return method(app, *args, **kwargs)
>>>>   File 
>>>> "/usr/local/sage-9/local/lib/python3.9/site-packages/IPython/terminal/ipapp.py",
>>>>  line 308, in initialize
>>>>     super(TerminalIPythonApp, self).initialize(argv)
>>>>   File 
>>>> "/usr/local/sage-9/local/lib/python3.9/site-packages/traitlets/config/application.py",
>>>>  line 88, in inner
>>>>     return method(app, *args, **kwargs)
>>>>   File 
>>>> "/usr/local/sage-9/local/lib/python3.9/site-packages/IPython/core/application.py",
>>>>  line 450, in initialize
>>>>     self.parse_command_line(argv)
>>>>   File 
>>>> "/usr/local/sage-9/local/lib/python3.9/site-packages/IPython/terminal/ipapp.py",
>>>>  line 303, in parse_command_line
>>>>     return super(TerminalIPythonApp, self).parse_command_line(argv)
>>>>   File 
>>>> "/usr/local/sage-9/local/lib/python3.9/site-packages/traitlets/config/application.py",
>>>>  line 88, in inner
>>>>     return method(app, *args, **kwargs)
>>>>   File 
>>>> "/usr/local/sage-9/local/lib/python3.9/site-packages/traitlets/config/application.py",
>>>>  line 709, in parse_command_line
>>>>     self.cli_config = deepcopy(loader.load_config())
>>>>   File 
>>>> "/usr/local/sage-9/local/lib/python3.9/site-packages/traitlets/config/loader.py",
>>>>  line 851, in load_config
>>>>     self._parse_args(argv)
>>>>   File 
>>>> "/usr/local/sage-9/local/lib/python3.9/site-packages/traitlets/config/loader.py",
>>>>  line 908, in _parse_args
>>>>     self.parsed_data = self.parser.parse_args(to_parse)
>>>>   File "/usr/lib/python3.9/argparse.py", line 1834, in parse_args
>>>>     args, argv = self.parse_known_args(args, namespace)
>>>>   File 
>>>> "/usr/local/sage-9/local/lib/python3.9/site-packages/traitlets/config/loader.py",
>>>>  line 768, in parse_known_args
>>>>     return super().parse_known_args(args, namespace)
>>>>   File "/usr/lib/python3.9/argparse.py", line 1862, in parse_known_args
>>>>     namespace, args = self._parse_known_args(args, namespace)
>>>>   File "/usr/lib/python3.9/argparse.py", line 2076, in _parse_known_args
>>>>     start_index = consume_optional(start_index)
>>>>   File "/usr/lib/python3.9/argparse.py", line 2016, in consume_optional
>>>>     take_action(action, args, option_string)
>>>>   File "/usr/lib/python3.9/argparse.py", line 1944, in take_action
>>>>     action(self, namespace, argument_values, option_string)
>>>>   File 
>>>> "/usr/local/sage-9/local/lib/python3.9/site-packages/traitlets/config/loader.py",
>>>>  line 933, in __call__
>>>>     namespace._flags.append(self.flag)
>>>> AttributeError: 'Namespace' object has no attribute '_flags'
>>>>
>>>> Rebuilding Sage (make build) was unsuccessful.
>>>>
>>>> However, using Sage via the Jupyter notebook still works.
>>>>
>>>> Suggestions ?
>>>> ​
>>>>
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>>>>
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