We don't include tcl/tk so our binary distribution doesn't include tkinter 
/ tkagg. If you have all build dependencies and compile from source it 
should work.



On Friday, December 12, 2014 4:07:40 PM UTC, LouP wrote:
>
> Runing Sage 6.4.1 on a MacBook Pro, OS X 10.9 (but the problems below 
> happen on all other Macs running 10.6 for example (with appropriate Sage 
> versions).
>
> I usually use Sage from a Python script.  And I use the Python and 
> packages/libraries provided in Sage.  When using plotting calls in 
> Matplotlib to a window with TkAgg as the backend I always have to add the 
> file _tkagg to the backends in the Sage/.../matplotlib/backends folder.  
> Otherwise I get an error and a complaint that   _tkagg  cannot be found:
>
>  ImportError: cannot import name _tkagg  (an import from tkagg.py)
>
>  This happens every time I upgrade Sage.  Luckily I have the _tkagg   file 
> from previous Python installs and can still copy that one over.
>
>  My Question:  Why doesn't Sage supply the _tkagg   file?  Or should I be 
> using some other backend to plot to a window?
>
>  Thank you for any ideas, info, or help.
>
> -- Lou Pecora
>

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