Programmatic Checkout from Amazon.com ( & Amazon.in )

I am trying to automate the purchase of products listed on Amazon.com in Python. We would like to make 1-click purchase with the saved payment details.

I understand Zinc enables the automated product purchase through their API. Does Amazon have a Sandbox account to test this ? Any idea how this can be done

Any suggestion, pointers in this regard will be really helpful.

from Programmatic Checkout from Amazon.com ( & Amazon.in )