The pvconst parameter is different for PV modules even though they are created in exactly same way.

[sivasembian]

PV1 = pvmodule.PVmodule()
PV2 = pvmodule.PVmodule()
PV1.pvconst == PV2.pvconst

Ans -> False

pvconst= pvconstants.PVconstants(npts=101)
PV1 = pvmodule.PVmodule(pvconst=pvconst)
PV2 = pvmodule.PVmodule(pvconst=pvconst)
PV1.pvconst == PV2.pvconst

Ans -> True

Why do I need to assign the pvconst parameters to each module to ensure their similarity? Why are the default values not working as they should?