Re: org-babel guile source block bug in handling multiple values

[Zelphir Kaltstahl <zelphirkaltstahl@posteo.de>]

On 3/9/23 14:10, Ihor Radchenko wrote:
> Zelphir Kaltstahl <zelphirkaltstahl@posteo.de> writes:
>
>> ~~~~START~~~~
>> #+name: python-imports
>> #+begin_src python :python /usr/bin/python3 :results output replace drawer :var x=4
>> import math
>>
>> y = math.sqrt(x)
>> # print(y)
>> #+end_src
>>
>> #+name: python-usage
>> #+begin_src python :python /usr/bin/python3 :return :noweb strip-export :results value replace drawer
>> <<python-imports>>
>>
>> print("y: {}".format(y))
>> #+end_src
>> ~~~~~END~~~~~
>>
>> Unfortunately, this example does not seem to work at all, but for a different
>> reason:
>>
>> It seems that using any Python source block with :var header args via :noweb
>> does not work, as it then behaves in the way, that it merely pasted the included
>> source block, without first putting in the :var values into the variables. I get
>> errors about those :var variables being undefined, of course, since they are on
>> the included source block, not on the including one:
>>
>> ~~~~START: *Org-Babel Error Output*~~~~
>> Traceback (most recent call last):
>>     File "<stdin>", line 10, in <module>
>>     File "<stdin>", line 5, in main
>> NameError: name 'x' is not defined
>> [ Babel evaluation exited with code 1 ]
>> ~~~~~END~~~~~
> This is expected. Noweb includes the src block code without altering it.
> See 16.11 Noweb Reference Syntax
>
> We may probably clarify this in the manual. Would it be helpful?
I think it would be helpful. I merely tried Python, because it was at hand and 
because I did not find ob-racket in M-x package-list RET and did not have 
another Scheme installed. Cannot say, whether others find the behavior confusing 
or not, but I imagine I would find it helpful, if it was mentioned in the docs.

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