>>> cf.environment(paths=False)
Platform: Linux-5.3.0-46-generic-x86_64-with-debian-buster-sid
HDF5 library: 1.10.4
netcdf library: 4.6.3
udunits2 library: libudunits2.so.0
python: 3.7.3
netCDF4: 1.5.3
cftime: 1.1.1
numpy: 1.18.1
psutil: 5.4.7
scipy: 1.4.1
matplotlib: 3.2.0
ESMF: 8.0.0
cfdm: 1.8.0
cfunits: 3.2.5
cfplot: not available
cf: 3.2.0

>>> x = f.coordinate('X')
>>> x.get_geometry()
'polygon'
>>> print(x.creation_commands(representative_data=True))
# auxiliary_coordinate: longitude
c = cf.AuxiliaryCoordinate()
c.set_properties({'units': 'degrees_east', 'standard_name': 'longitude'})
d = <CF Data(2): [10.0, 40.0] degrees_east> # Representative data
c.set_data(d)
c.nc_set_variable('lon')
b = cf.Bounds()
b.set_properties({'units': 'degrees_east', 'standard_name': 'longitude', 'axis': 'X'})
d = <CF Data(2, 3, 4): [[[20.0, ..., --]]] degrees_east> # Representative data
b.set_data(d)
b.nc_set_variable('x')
c.set_bounds(b)