Write Adwords objects to disk

Hi.

Pulling the adwords network (campaigns, adgroups, criterions etc) takes quite some time to complete. This is why I would like to save and keep the objects I pull on my local disk (file), so that if anything goes wrong then I won't need to pull all the stuff I need again.

I've tried using pickle (and also cPickle) and dill but they can't handle those objects.

Did anyone do something similar and used an existing library to do so?

Thanks

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