python 2.7 - How to check if class is initialized using the with statement? -

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i'm using class example answer make sure files cleaned up: https://stackoverflow.com/a/865272/651779

what when call

pacakge_object = packageresource()

instead of 

with packageresource() package_obj:     # stuff

it gives error explaining class can used with statement. there way of knowing if class initialized with packageresource() package_obj: instead of pacakge_object = packageresource()?

set flag in __enter__ function, , if properties / methods of class called without flag set, cheating on you.


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