Hi all,
I'm trying to figure out if there is a canonical way to get the identity
of an object that has been wrapped by the win32com module, so that it
can be compared to other objects.
For example, I can use this code to get a handle to the same object
twice in the JMP application, but the two tables do not have the same
"object identity" at the Python level:
from win32com.client import gencache
mod = gencache.GetModuleForProgID("JMP.Application")
app = mod.Application()
table = app.GetTableHandleFromName("Table1")
same_table = app.GetTableHandleFromName("Table1")
print table
print same_table
print table is same_table
# <win32com.gen_py.DCD36DE0-78F8-11CF-9E68-
0020AF24E9FEx0x1x0.IAutoDataTable instance at 0x54418504>
# <win32com.gen_py.DCD36DE0-78F8-11CF-9E68-
0020AF24E9FEx0x1x0.IAutoDataTable instance at 0x54432456>
# False
It appears that all win32com OLE automation objects also have an
_oleobj_ property. _oleobj_ is a PyIDispatch object
(http://docs.activestate.com/activepython/3.1/pywin32/PyIDispatch.html),
which only has a few methods, none of which seem pertinent to the
question of object identity. However, the repr() of _oleobj_ seems to
point to the underlying OLE automation object:
print table._oleobj_
print same_table._oleobj_
# <PyIDispatch at 0x0000000003459530 with obj at 0x00000000003E2928>
# <PyIDispatch at 0x0000000003459620 with obj at 0x00000000003E2928>
In order to confirm that two objects refer to the same underlying OLE
object, I've resorted to parsing the `repr()` strings and comparing the
hexadecimal addresses ("`obj at 0x...`").
Is there a better way to do this?
Thanks,
Dan Lenski
ps- I also posted this on StackOverflow
(http://stackoverflow.com/questions/26068864) but it doesn't seem to
have gotten many eyeballs there.
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