issues with multicanonical sampler

hi,
I'm writing to report several issues with the multicanonical sampler, using gt version 2.37. ((haven't been able to login on gitlab tracker)

First with the NestedBlockState

g = gt.collection.data["celegansneural"]
state = gt.NestedBlockState(g)
nbins=100
S0 = state.entropy()
Smin,Smax = S0*0.90,S0*1.1
ms= gt.MulticanonicalState(state,Smin,Smax, nbins=nbins)
gt.multicanonical_equilibrate(ms)

Will return:

/usr/lib/python3/dist-packages/graph_tool/inference/mcmc.py in sweep(self, **kwargs)
    426
    427 def sweep(self, **kwargs):
--> 428 self._state.multicanonical_sweep(self, **kwargs)
    429
    430 def get_energies(self):
TypeError: multicanonical_sweep() takes 1 positional argument but 2 were given

Then with BlockState:

state = gt.BlockState(g)
nbins=100
S0 = state.entropy()
Smin,Smax = S0*0.90,S0*1.1
ms= gt.MulticanonicalState(state,Smin,Smax, nbins=nbins)
gt.multicanonical_equilibrate(ms) #THIS IS OK
ds,nattempts,nmoves = state.multicanonical_sweep(ms,niter=10 )

The last line fails with the following output:

/usr/lib/python3/dist-packages/graph_tool/inference/blockmodel.py in _multicanonical_sweep_dispatch(self, multicanonical_state)
   1702 _get_rng())
   1703 else:
-> 1704 return libinference.multicanonical_sweep(multicanonical_state,
   1705 self._state, _get_rng())
   1706
TypeError: No registered converter was able to extract a C++ reference to type boost::any from this Python object of type NoneType

Thanks for this wonderful module!

Hi,

These belong to the issue tracker. Could you please try again to login
and post there?

Best,
Tiago