On Monday, May 31, 2021 at 10:18:05 AM UTC-7 Samuel Lelievre wrote:

> On a colleague's machine: [...]
> - macOS 11 
> - installing from SageMath 9.3 macOS 11 binary 
>
> After downloading and extracting the binary tarball, 
> running Sage launches the relocation process, 
> then displays the banner, two syntax warnings, 
> and the prompt. 
>
> /Applications/SageMath/local/lib/python3.9/site-packages/traitlets/config/loader.py:795:
>  
>
> SyntaxWarning: "is" with a literal. Did you mean "=="? 
> if len(key) is 1: 
>
> Sage seems to work fine, but I'm surprised by these syntax warnings.


It may be worth trying if the IPython upgrade 
in https://trac.sagemath.org/ticket/31280 fixes these (harmless) warnings. 
(Needs review.)

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