Re: [Quantlib-users] Error in writing Python tests for FXForward

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 Hi Luigi
I am very sorry but may not have been clear enough
1) I got the latest versions of Quantlib 1.41 and Quantlib-SWIG 1.412) I manually added the FXForward class in my local version and it builds fine and the test for it under testsuite works fine3) I added the fxforward.i and amended ql.i4) When I build the python wheel it cannot find the FX Forward class
(When I do the above exercise without the FX Forward class, I can build the wheel successfully and all works well)

    On Sunday, March 15, 2026 at 12:33:03 AM GMT+8, Luigi Ballabio <lui...@gm...> wrote:  

 Your new class is not in QuantLib 1.41.  You need to check out the latest versions of QuantLib and QuantLib-SWIG from GitHub and use those ones.
Luigi

On Sat, Mar 14, 2026 at 5:41 AM Chirag Desai <chi...@ya...> wrote:

 Thank you Mr Luigi
1) I added in ql.i and recompiled Quantlib as well
2) I get error messages now when building the wheel stating FXForward class cannot be found. I have attached the error messages.
Build was successful 

    On Friday, March 13, 2026 at 10:50:47 PM GMT+8, Luigi Ballabio <lui...@gm...> wrote:  

 Hi Chirag, did you add your fxforward.i to the files included in ql.i ?
Luigi

On Fri, Mar 13, 2026 at 7:42 AM Chirag Desai <chi...@ya...> wrote:

 Hi AllI built Quantlib with the newfxforward.hpp, fxforward.cpp , fxforwarddiscountingengine hpp.cpp which I had recently contributed and successfullyin my own version of Quantlib 1.41. All tests work

I placed my fxforward.i file andswig runs successfully

The wheel is generated successfully

I am able to pip install the wheeland successfully can “import Quantlib as ql” and also can run certain Pythonfiles under SWIG in Examples and Tests (european-option.py,test_blackformula.py)

For some reason my FX Forward testsall fail. (attached test_fxforward.py)

How do I check if my FXForward classwas successfully exposed to the Python API ? If any tools available ?

When I do ql.  there is no dropdown either in IDE like VSCodeto see what ql functions are being exposed in Python ?
Thank you all