[IronPython] jagged arrays

[Elise Langham (Elanit)]

How do i create a jagged array in IronPython ?
I've tried various methods:

jagArray = Array[Array[int]]( ( (1,2), (1,2), (1,2,3), (1,2,3,4) ))

giving the error message: TypeError: expected Array[int], got tuple>

also

jaggedLengths = Array[int]((1,2,3,4))
cinit = System.Array.CreateInstance(int, jaggedLengths)
cinit[0][0] = 3

giving the error message: IndexError: index out of range: 0


Is there another method for creating arrays?
Many thanks,

   Elise
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