Import error while running python application on Mac OS

[hisan]

HI All,

I have created an application for Mac OS using py2app module, in my
python script i have external modules such as MySQLdb and other ,
while trying to run on Mac OS i get an error saying unable to import
the module MySQLdb.
On Windows i convert python script to an exe using py2exe module and
if i install VC++ on y machine my exe runs fine.
Is there any dependency on MAC OS.

Please let me know how to resolve my issue

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Regards,
Santosh