CONSTRUCT - Module Attributes and Execution Environment

[lazaridis_com]

I would like to change the construct:

if __name__ == '__main__':

to something like:

if exec.isMain():

My (OO thought) is to place a class in an separate code module and to
instantiate an singleton instance which would keep th something like
this:

class ExecutionEnv:
    def isMain(self)
        if CALLING_MODULE.__name__ == '__main__':
            return true
        else
            return false

exec = ExecutionEnv()

How to I get access to the CALLING_MODULE ?

-

Are ther alternative constructs/mechanism available, which could be
used to add this functionality possiby directly to a code-module?