Eu tento implementar uma operação de cópia simples entre dois documentos do Autocad via COM em Python.

from pyautocad import Autocad, APoint
from comtypes.client import GetBestInterface
# Get acad application
acad = Autocad(create_if_not_exists=True)
# Create a new document
doc1 = GetBestInterface(acad.Application.Documents.Add())
# add a circle in this document and make it visible
circle = GetBestInterface(doc1.ModelSpace.AddCircle(APoint(0.0, 0.0), 1.0))
doc1.Application.ZoomExtents()
# create another document
doc2 = GetBestInterface(acad.Application.Documents.Add())
# and copy the circle to the new document
doc1.CopyObjects([circle], doc2.ModelSpace)

Isso lança:

Traceback (most recent call last):
  File "copy_bug.py", line 13, in <module>
    doc1.CopyObjects([circle], doc2.ModelSpace)
  File "Anaconda2\lib\site-packages\comtypes\__init__.py", line 655, in call_with_inout
    rescode = func(self_, *args, **kw)
_ctypes.COMError: (-2145320837, None, (u'Invalid object array', u'AutoCAD.Application', u'C:\\Program Files\\Autodesk\\AutoCAD 2015\\HELP\\OLE_ERR.CHM', -2145320837, None))

O mesmo pode ser feito no VBA com:

Dim doc1 As AcadDocument
Set doc1 = ThisDrawing.Application.Documents.add
Dim pt(0 To 2) As Double
pt(0) = 0#: pt(1) = 0#: pt(2) = 0#
Dim circ As AcadCircle
Set circ = doc1.ModelSpace.AddCircle(pt, 1)

ThisDrawing.Application.ZoomExtents

Dim doc2 As AcadDocument
Set doc2 = ThisDrawing.Application.Documents.add

Dim arry(0 To 0) As AcadEntity
Set arry(0) = circ
doc1.CopyObjects arry, doc2.ModelSpace

Tentei matrizes numpy, tentei transmitir para oIDispatch interface, oIAcadEntity interface eIAcadObject sem sucesso (provavelmente uma tentativa boba).

circle = circle.QueryInterface(IAcadEntity)

Eu também tentei olhar para dentrosite-packages\comtypes\automation.py mas isso está acima da minha nota de pagamento. Configurando oself.vt paraVT_ARRAY | VT_DISPATCH no_set_value não adianta, mas desconfio que o problema esteja nesse sentido porque, se mudarmosDim arry(0 To 0) As AcadEntity paraDim arry(0 To 0) As Variant o exemplo do VBA também lançaráInvalid object array.

Devo mencionar que não comentei duas linhas nosite-packages\comtypes\automation.py:

# These are not yet implemented:
POINTER(IUnknown): VT_UNKNOWN,
POINTER(IDispatch): VT_DISPATCH,

Então .... ajuda ?!