>>> from owlready2 import *

a = get_ontology("jj")
a.name = "zool"

with a:
   class animal(Thing):pass
   class planta(Thing):pass
   class mamífero(animal) : pass
   class peso(DataProperty, FunctionalProperty): pass


>>> cão = animal("c", peso=33)
>>> falcão = mamífero("falcão", peso=3)

for a in g.classes():
   for x in a.instances():
       print(a,x,x.peso)


>>> animal("g1")
# jj:.g1

>>> with a:
...   class fruto(planta >> Thing):pass
...   class femea(animal >> Thing):pass


>>> list(a.classes())
#[jj:.animal, jj:.planta]

>>> list(a.properties())
#[jj:.fruto, jj:.femea]

>>> animal("f1").femea = ["ff2"]
>>> animal("f1").femea.append(ff3)
>>> maçã = planta("maçã")
>>> maçã
jj:.maçã
>>> josé_joão_almeida = animal("josé_joão_almeida")
>>> luísa = animal("luísa",femea = [josé_joão_almeida] )

>>>  luísa.femea.append(maçã)