TypeError in numpy called from BH.BHAccHistogram

[trquinn]

When running tangos write BH_mass BH_mdot_histogram --for h102054gs --type bh I get the following exception. It looks like a conversion from float to int is needed for the last argument to np.linspace(). This is with numpy version 1.20.2.

Uncaught exception during property calculation <tangos.properties.pynbody.BH.BHAccHistogram object at 0x15552e88fb80> applied to <BH 'h102054gs/h102054gs.004096/BH_238728098' | NDM=0 Nstar=0 Ngas=0> Traceback (most recent call last): File "/home/u14266/.local/lib/python3.8/site-packages/tangos-1.1.1-py3.8.egg/tangos/tools/property_writer.py", line 382, in _get_property_value result = property_calculator.calculate(snapshot_data, db_data) File "/home/u14266/.local/lib/python3.8/site-packages/tangos-1.1.1-py3.8.egg/tangos/properties/pynbody/BH.py", line 125, in calculate t_grid = np.linspace(0, grid_tmax_Gyr, nbins) File "<__array_function__ internals>", line 5, in linspace File "/home/u14266/.local/lib/python3.8/site-packages/numpy/core/function_base.py", line 120, in linspace num = operator.index(num) TypeError: 'float' object cannot be interpreted as an integer