>>> import ifcopenshell
>>> f = ifcopenshell.file()
>>> inst = f.createIfcWall('a')
>>> inst2 = f.by_guid('a')
>>> f.remove(inst)
>>> inst2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\tkrij\miniconda3\envs\ifopsh08\lib\site-packages\ifcopenshell\entity_instance.py", line 307, in __repr__
    return repr(self.wrapped_data)
  File "C:\Users\tkrij\miniconda3\envs\ifopsh08\lib\site-packages\ifcopenshell\ifcopenshell_wrapper.py", line 8045, in __repr__
    return _ifcopenshell_wrapper.entity_instance___repr__(self)
RuntimeError: No longer availabe