Let's say I have a function like this: def do_something(dict_obj): # access to the dict_obj then do some stuff eg. if dict_obj['doors']: do_something_with_doors() map_car_make(dict_obj['make']) ... if dict_obj['is_active']: do_something_else() I want to mock the dict_obj to have is_active element and don't care the rest, how do I do that? Continue reading...