Possible Duplicate:
Python: Best Way to Exchange Keys with Values in a Dictionary?
Suppose that I need to swap keys for values in dictionary.
This is what I have in mind (Assuming that the values' value is unique):
>>> my_dict = {'x':1, 'y':2, 'z':3}
>>> my_dict2 = {}
>>> for key, val in my_dict.items():
my_dict2[val] = key
Is there any other efficient way to do it?
