how to change key to value and versa in python dictionary code example

Example 1: switching keys and values in a dictionary in python [duplicate]

my_dict = {2:3, 5:6, 8:9}

new_dict = {}
for k, v in my_dict.items():
    new_dict[v] = k

Example 2: how to change key to value and versa in python dictionary

dict = {value:key for key, value in dict.items()}