Can we do formatting on dictionary?

Question

Just like we can do string formatting by using a .format function, is there a way to format dictionary similarly ?
# string formatting
example
nums = [4, 5, 6]
msg = "Numbers: {67} {6} {2}". format(nums[0], nums[1], nums[2])
print(msg)

Output: Numbers: 4 5 6

I want to replace the keys in a dictionary.
msg = {3:4, 5:6} .
how can I replace 3 and 5 ?

Answer 1

dict[newKey] = dict[oldKey]
del dict [oldKey]
or
dict[new_key] = dict.pop[old_key]
or
with a for loop