PythonCall.jl how do I handle Python exceptions? #388

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1. hubert-associates

   added

   questionFurther information is requestedFurther information is requested

   on Oct 20, 2023
2. cjdoris commented on Oct 21, 2023

   

   cjdoris

   on Oct 21, 2023

   Member

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   This in Julia

   julia> try
              @pyexec "raise ValueError('foo')"
          catch err
              if err isa PyException && pyisinstance(err, pybuiltins.ValueError)
                  @info "handling a ValueError"
              else
                  rethrow()
              end
          end
   [ Info: handling a ValueError
   

   is roughly equivalent to this in Python

   >>> try:
   ...     raise ValueError('foo')
   ... except ValueError as err:
   ...     print('handling a ValueError')
   ...
   handling a ValueError
   
3. hubert-associates commented on Oct 21, 2023

   

   hubert-associates

   on Oct 21, 2023

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   Sincere thanks for the quick response. Tricky/frustrating to arrive here without this user's guide pattern ....