Fixed get_ad_unit_hierarchy.py #91
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When you store the parent ad unit on the variable
root_ad_unit(line 55), you are actually storing an array of size 1 which contains the ad unit. That causes the code to fail at line 74 (if root_ad_unit['id'] in ad_unit_tree:), becauseroot_ad_unitis not the object itself, is the array of size 1 containing the object.To prevent that, I've added a [0] at line 55 so you are storing the object instead an array.