[pywin32-bugs] [ pywin32-Patches-3609017 ] Provide enums dynamically

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Patches item #3609017, was opened at 2013-03-25 07:39
Message generated for change (Comment added) made by sschukat
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Stefan Schukat (sschukat)
Assigned to: Nobody/Anonymous (nobody)
Summary: Provide enums dynamically

Initial Comment:
In COM enums are transported as integers and hence hard to use for a programmer, which always has to map these numbers to comprehensive names. Since the enums are only available in typelibraries a wrapper had to be generated (makepy, gencache) to use them. There was no way that a enum could be used dynamically the same way a a COM object. The patch provides a way to use enums dynamically without generating a wrapper. So it is easy to use from a programmers viewpoint. The enum implementation used metaclasses so that the representation of the enum is always in a readable form and the enums are provided via members of enum classes. Used typelibraries are scanned inclusive their dependencies.

>>> from win32com.client import Enums
>>> from win32com.client import Dispatch
>>> Word = Dispatch("Word.Application")
>>> constants = Enums(Word)
>>> constants.CertificateDetail.certdetIssuer
<certdetIssuer 2>
>>> print constants.CertificateDetail.certdetIssuer
certdetIssuer
>>> constants.CertificateDetail.certdetIssuer + 2
4

This enums class is used for over a year in our Python distribution and tested against Python 2.7.3 and  Python 3.2.3

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>Comment By: Stefan Schukat (sschukat)
Date: 2013-05-03 06:20

Message:
Added the patch with pep8 checked source and unit tests.

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