[pywin32-bugs] [ pywin32-Bugs-2857273 ] Handling type complex

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Bugs item #2857273, was opened at 2009-09-12 00:02
Message generated for change (Comment added) made by no_hope
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Category: None
Group: None
Status: Closed
Resolution: Wont Fix
Priority: 5
Private: No
Submitted By: no_hope (no_hope)
Assigned to: Nobody/Anonymous (nobody)
Summary: Handling type complex

Initial Comment:
I think win32com may not handle Python's complex type correctly.

I use win32com client to manipulate variable inside LabVIEW. When I read LabVIEW's complex variable it is returned as a tuple. However, when I try to write to a LabVIEW's complex variable using tuple, I get 
pywintypes.com_error: (-2147352567, 'Exception occurred.', (0, None, None, None, 0, -2147352571), 2)
in ._oleobj_.InvokeTypes as if there is type mismatch.
If I supply an object of type complex, win32com is happy but LabVIEW complains (presumably because it wants a tuple).

Is it possible that this is a bug since win32com client sometimes uses tuple and sometimes complex for the same object?


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Comment By: no_hope (no_hope)
Date: 2009-09-12 00:17

Message:
Then how come win32com gives me an error unless I give it a an object of
type complex? Or is 
pywintypes.com_error: (-2147352567, 'Exception occurred.', (0, None, None,
None, 0, -2147352571), 2)
LabVIEW's exception, not win32com's?

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Comment By: Mark Hammond (mhammond)
Date: 2009-09-12 00:08

Message:
COM doesn't define a complex type, so win32com doesn't either.  I've no
idea what LabVIEW would be expecting to be passed here - but I'm guessing
it uses a simple array of 2 integers or floats, which is what makes you
think win32com sometimes uses a tuple.

You probably need to ask the labview guys what they use to represent a
complex number.

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You can respond by visiting: 
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