I think this might be a very trivial question, but since I am pretty unfamiliar with C, this is a bit of a problem for me.

I have created IborIndex somewhere (it is correctly working):

mspr = ql.IborIndex('Mosprime', ql.Period('3M'), 2, ql.RUBCurrency(), ql.Russia(), ql.Following,  True, ql.ActualActual()

Later I want to use it for cap pricing. I create some working yield curve handle:

curve_handle = ql.YieldTermStructureHandle(mosprime3M.curve)

How do I pass it to the IborIndex? My solution is to recreate ql.IborIndex from scratch, using extracted parameters ( like mspr.familyName() ), but I believe there does exist a one-liner. Usual Python notation doesn't seem to work. Could you please help?


1 Answer 1


Pass a ql.RelinkableYieldTermStructureHandle to the index constructor and then link a curve to it...

curve_handle = ql.RelinkableYieldTermStructureHandle()
mspr = ql.IborIndex(
    'Mosprime', ql.Period('3M'), 2, ql.RUBCurrency(), ql.Russia(),
    ql.Following,  True, ql.ActualActual(),

crv = ql.FlatForward(2, ql.Russia(), 0.01, ql.ActualActual())

or clone the index and pass a YieldTermStructureHandle

new_index = mspr.clone(curve_handle)
  • $\begingroup$ David, you are the best. Thanks a lot. Works exactly as I wanted. $\endgroup$
    – egor_zhev
    Aug 10, 2021 at 14:23

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