Python - Software Wrapper switch

#1

Hello.
I’m doing an experiment where I have mostly generic python code and then some software specific commands in wrappers for each targeted 3d application that uses python scripting. I’m in a situation where I have to support many different applications and this first test is me just dipping my feet into trying a one-script approach for common workflow tasks. I already found some large annoyances like it seems every software has their own flavor of Python and need specially compiled versions of PIL, etc.

Anyways, the current way I have it set up is a series of nested try except blocks. If I’m in 3ds Max, the first try will fail on import maya.cmds and go to the except where I try import Py3dsMax which would succeed, etc. However, this is very ugly IMO. Any ideas of a better way to do this?


try:
    import MayaWrapper as SoftwareWrapper
except:
    try:
        import MaxWrapper as SoftwareWrapper
    except:
        try:
            import Cinema4DWrapper as SoftwareWrapper
        except:
            try:
                import BlenderWrapper as SoftwareWrapper 
            except:
                try:
                    import LightwaveWrapper as SoftwareWrapper
                except:
                    try:
                        import HoudiniWrapper as SoftwareWrapper
                    except:
                        import FallbackWrapper as SoftwareWrapper
#2

This is a bit of a shot in the dark, but maybe something like this:



import sys

if sys.modules.has_key('MayaWrapper'):
   pass
elif sys.modules.has_key('MaxWrapper'):
   pass