# Write a Python program to Swapping Hierarchy in Nested Dictionaries # Python3 code to demonstrate working of# Swapping Hierarchy in Nested Dictionaries# Using loop + items()# initializing dictionarytest_dict = {'Gfg': { 'a' : [1, 3], 'b' : [3, 6], 'c' : [6, 7, 8]},             'Best': { 'a' : [7, 9], 'b' : [5, 3, 2], 'd' : [0, 1, 0]}}# printing original dictionaryprint("The original dictionary : " + str(test_dict))# Swapping Hierarchy in Nested Dictionaries# Using loop + items()res = dict()for key, val in test_dict.items():    for key_in, val_in in val.items():        if key_in not in res:            temp = dict()        else:            temp = res[key_in]        temp[key] = val_in        res[key_in] = temp# printing resultprint("The rearranged dictionary : " + str(res))