Rename Dictionary Key in Python

I’d like to add another perspective. If you’re working with both regular dictionaries and OrderedDicts, and you want an alternative to pop, try dictionary comprehension. It creates a new dictionary and renames the key in one go:

my_dict = {'old_key': 'value'}
my_dict = {('new_key' if key == 'old_key' else key): value for key, value in my_dict.items()}
print(my_dict)
# Output: {'new_key': 'value'}

This is particularly useful when you want to handle the renaming without modifying the dictionary in place. It’s a slightly different flavor of efficiently achieving Python rename dictionary key while being more functional in style.