Okay, that makes sense. I thought I had seen deprecation warnings from
basic commands issued at the "sage:" prompt, but I must be misremembering.
John
On Saturday, October 19, 2019 at 1:20:15 PM UTC-7, David Roe wrote:
>
> The reason that the warning isn't printed is that the stacklevel is set to
> 4 by default in order to tell the user where the Integer('012') is
> occurring. When you type '012' directly into the command line, the stack
> isn't deep enough and no warning is printed. You do see a warning if you
> write a function that uses it:
>
> sage: def hello():
> ....: Integer('012')
> ....:
> sage: hello()
> /home/sage/sage-8.8/src/bin/sage-ipython:1: DeprecationWarning: use 0o as
> octal prefix instead of 0
> If you do not want this number to be interpreted as octal, remove the
> leading zeros.
> See http://trac.sagemath.org/17413 for details.
> #!/usr/bin/env sage-python23
>
> I think the idea is that if a user's typing interactively then they don't
> need a deprecation warning (since the behavior currently works). It's more
> important to show a user a warning if they have the deprecated behavior in
> a function they've written.
> David
>
> On Sat, Oct 19, 2019 at 2:56 PM John H Palmieri <jhpalm...@gmail.com
> <javascript:>> wrote:
>
>> Here is a doctest from sage/rings/integer.pyx:
>>
>> sage: Integer('012')
>> doctest:...: DeprecationWarning: use 0o as octal prefix instead
>> of 0
>> If you do not want this number to be interpreted as octal, remove
>> the leading zeros.
>> See http://trac.sagemath.org/17413 for details.
>> 10
>>
>> But if I run the command Integer('012')from the command line (in a newly
>> started Sage session) or the Jupyter notebook, no deprecation warning is
>> printed. Same if I just evaluate 012. Is this a bug? It seems to defeat
>> the purpose of the deprecation warning, which is to actually warn people
>> that a feature is going away, not just to provide extra characters in
>> docstrings and the reference manual.
>>
>> --
>> John
>>
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>>
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