Why doesn't Python (error msg) tell me WHAT the actual (arg) values are ?

[Hen Hanna]

On Wednesday, February 22, 2023 at 12:05:34 PM UTC-8, Hen Hanna wrote:
> > py bug.py 
> Traceback (most recent call last): 
> File "C:\Usenet\bug.py", line 5, in <module> 
> print( a + 12 ) 
> TypeError: can only concatenate str (not "int") to str 
> 
> 
> Why doesn't Python (error msg) do the obvious thing and tell me 
> WHAT the actual (offending, arg) values are ? 
> 
> In many cases, it'd help to know what string the var A had , when the error occurred. 
> ------------ i wouldn't have to put print(a) just above, to see. 
> 
> 
> 
> 
> ( pypy doesn't do that either, but Python makes programming (debugging) so easy that i hardly feel any inconvenience.)



i  see that my example   would be clearER  with this one-line  change:


                  >  py   bug.py

                   Traceback (most recent call last):

                  File "C:\Usenet\bug.py", line 5, in <module>
                                         map( Func,    fooBar(  X,  Y,  X +  Y  ))
 
                   TypeError: can only concatenate str (not "int") to str


i hope that   NOW   a few of you  can  see this as a genuine,  (reasonable)  question.